Originally posted at DD-LJ, 4 December 2006

Title: An Unexpected Lesson
Author: snegurochka_lee
Characters: Severus/Lily/Remus
Rating: NC-17
Warnings: Threesome, arseplay, unrepentant PWP, Lily shamelessly cheating on James… Also rather fluffier than my usual fare. I didn't think anyone would particularly mind, seeing as it is Kristmas and all… ;)
Word Count: 4,700
Summary: Lily heads to the library to ask Remus and Severus a nagging question, but leaves with rather a different answer than what she'd intended…
Author's notes: For karasu_hime, who wanted Severus/Lily/Remus, first time, awkward sex, fingering, double penetration, and a scenario in which a study session "takes an interesting turn." I suspect this isn't precisely what you had in mind, but I hope it pleases! Happy Kinky Kristmas, Karasu!



An Unexpected Lesson

by Snegurochka

*

"No, he's not."

"Yes, he is!"

"No way!"

"Look, Evans, I'm telling you: Remus is a flaming shirt lifter, all right?"

"But–"

"Nope." James held up a hand. "I've showered with him, and I know the truth: couldn't keep his eyes off me."

"Oh, please. I mean, it's fine if he is, of course, but I just don't think–"

"All right, Evans, if you really have to know, why don't you run along and ask him? I'd like to hear how he gets out of that one."

"Fine, maybe I will."

Lily set off for the library, a determined look on her face. There were far more interesting ways to find out than to simply ask him, after all.

~~~~~

Unfortunately, when she arrived in the library for their nightly study session, Remus was otherwise engaged. As usual.

She narrowed her eyes and crept carefully around the corner from Pince's desk, slipping past the other students in the main room reserved for group study and heading towards the flicker of light brown hair she could just barely see through the cracks in the book stacks of the farthest corner. This was the reason she usually tried to arrive a few minutes early to study with Remus. She knew something that James, Sirius, and Peter did not: that Remus only spent the second half of his study time with Lily; the first hour was reserved for Severus.

That hour had nothing to do with studying.

She knew that the two boys had become rather adept with Do Not Notice charms, and it gave Lily a small thrill to walk through the corridors or peek into empty classrooms at other times of the day and wonder if they might be mere inches from her at that very moment, sucking in their breath and trying to still their racing pulses until she passed, then resuming their activities under each other's clothes.

She shivered, her eyes on the book shelves. At this point, at the end of the hour, the charm tended to wear off when they weren't paying attention. This was the time of night when she got to watch. She settled on the other side of the shelf and peeked through a gap in the books, her eyes immediately landing on Remus's wet lips where they slid over Severus's throat.

Severus let out a small groan, tilting his head back and grasping at Remus's hair to pull him in closer, and as he did so, he opened his eyes. Oops.

Lily froze.

A steady black gaze bore down on her through the tiny space between the books, a knowing gaze that she could read as neither angry nor amused. He simply stared, betraying no emotion at her presence. His lips parted again in a short gasp and she realised Remus's hands had moved somewhere lower on Severus's body, but still, those eyes held her.

"Lupin," he murmured at last, breathing into Remus's ear. "We have company."

"Mmmf," said Remus, his mouth lost in the hair falling over Severus's neck and shoulder.

With a frown, Severus pushed him away, folding his arms over his chest and glaring at Lily through the gap. She sighed and headed around the corner, ready to meet his angry words.

"Lily!" Remus said with wide eyes, scrambling to button his robes and smooth them over his body. That was a mistake, of course, as it only drew even more attention to the rather sizeable bulge at his groin. She followed his eyes down, feeling her face heat as his cheeks pinkened. "Okay, well– Listen, would you– Um." He dropped his eyes to the floor, cursing under his breath.

"Oh, for pity's sake, Lupin," said Severus, dropping into a chair at a nearby table. "It's not exactly news to her, is it?" He glanced up at Lily expectantly.

"Er– what isn't?" she stammered.

Severus gestured between himself and Remus. "Discovering your dear Gryffindor brother has a not-so-secret desire for Slytherin cock."

Both Lily and Remus dropped their jaws, staring at Severus. Well. Someone was rather less than embarrassed about the situation.

"Snape!" groaned Remus, his head in his hands as he leaned back against the shelf.

Lily eyed them both. "Brother?" she asked Severus with a raised eyebrow. "Is that how you assume I think of him?"

It was Severus's turn to be speechless. After a moment he cleared his throat. "I see. Potter does not meet all your needs, then?" He smirked. "Why am I not surprised?"

"He meets my needs just fine," she said with a toss of her hair, "but let's just say he has rather… conventional ideas about what those needs might be."

"Mm," said Severus with the barest hint of a smile. "You need only lie back, open your legs, and wait for him to finish, is that it?"

"Snape!" cried Remus again, his face bright red now. With great difficulty, he let his hand fall away from where it had been hiding his face, glancing between Severus and Lily with a sort of appalled curiosity. "What are you two even talking about?"

"I think we're talking about sex, Lupin," said Severus with a shrug. "Surely you've heard the word?"

Remus closed his eyes, allowing Lily to share an amused look with Severus. Well, well, well. She had thought Remus would be her partner in crime tonight, the eager and curious one who would need to convince the other, not Severus. But she was an adaptable sort of girl.

Severus rose from his chair and moved towards Remus where he stood against the shelf. "If you haven't heard it," Lily heard him murmur into Remus's ear, "then perhaps you will at least recall what it feels like…"

Remus moaned and opened his eyes, giving Severus such a wanton, hungry look from under his hooded lids that Lily had to will herself to calm her heart rate.

"You know," she said quietly to them, "James thinks Remus is completely queer. Don't think he knows who he's been shagging," she added to Severus, "or I'm sure you wouldn't be here right now, but he definitely thinks it's someone."

Remus tore his eyes from Severus and shrugged. "Figured as much," he said to her, his face finally beginning to return to its normal colour. "He doesn't mind, does he?"

"No," Lily said slowly, shaking her head and dropping her voice, "but... does that mean you've never even been curious about girls?"

While Remus's face crunched in confusion, Severus turned towards her and narrowed his eyes. He took a step forward and reached out, his long, pale index finger running lightly down the side of her face. The touch left her skin prickling and sent a jolt down her spine – a reaction she had not entirely been expecting. How interesting. "I think what Miss Evans is asking," said Severus quietly, "is whether you've ever been curious about her."

She smiled, stepping towards him and closing the small gap between them while Remus looked on. Reaching up to take his wrist, she pulled his hand gently away from her face and repositioned it, sliding the tip of a single finger between her lips. She swirled her tongue around it once, holding his gaze and relishing the way his eyes darkened before letting the finger slip free. "Actually," she purred, "I was wondering whether either of you have been curious about me."

A soft whimper escaped Remus's throat as he watched them, and Severus glanced over at him. "What do you think, Lupin?" he drawled. "Shall we allow her to come between us?"

Remus groaned again, pushing himself away from the shelf and grasping Severus's collar. With Lily only inches away, he pulled Severus in close and kissed him, his lips urgent and demanding against the other boy's. Lily watched them with fascination, a deep arousal building within her at the sight. Their lips parted and the two boys let their tongues tangle, breath mingling and wet lips devouring.

With a final tug at Severus's bottom lip, Remus pulled away and turned to Lily. "What were you curious about?" he murmured.

"That," she answered breathlessly with a soft laugh. "Can you do that charm again, or does it only work once a night?"

Severus drew his wand with a smirk and lazily performed another Do Not Notice charm, obscuring their corner from the other library patrons. "There," he told her. "Now, what else did you want to know?"

She smiled. How observant they were. "Just… whether you'd know what to do with a girl if you ever found yourselves with one."

Severus's dark eyebrows shot up. "Indeed? And here I had rather the opposite question."

Remus and Lily both watched him with interest. "And what's that?" she asked, tilting her head to the side.

He folded his arms over his chest and looked at her with a smug face. "Whether you'd know what to do with two shirt lifters if you ever found yourself with them."

It was Lily's turn to be surprised, and she let out a short laugh. She glanced at Remus, who only smiled, shaking his head as though he couldn't quite believe any of this was happening. "Well, Severus," she began slyly, "no, I suppose I wouldn't. What should I do with you?" she added in a low voice.

The words were barely out of her mouth before Severus leaned in and kissed her. He was rougher than James ever was, much more insistent in the way his lips met hers and his tongue demanded entrance. She found herself pushing him away before she meant to, wiping her mouth and glaring at him.

Remus, who had stepped back a bit and was avidly watching, only smiled at her. "First lesson," he offered, evidently warming to their task. "When you're used to kissing other blokes, you tend to be a bit more demanding about things."

Her eyes widened and she looked back and forth between them. The idea that they always kissed that way, rough and needy and without a thought to the more delicate sensibilities of female lips made her stomach flip over a little bit. Okay, that was just… hot. "You too, then?" she asked Remus breathlessly, and he grinned, stepping towards her.

He kissed her a little more gently, but with all the underlying neediness and passion of Severus's kiss. The stubble at his chin scratched her, and she found her hands clutching at the front of his robes and pulling him in closer. When he pushed his tongue into her mouth, she was ready for it and battled him right back, tasting and tangling with him as he gripped the back of her head. She moaned and deepened the kiss, feeling his hot breath on her and licking at every bit of him she could, trying to taste Severus on him.

"Such a good pupil," she heard Severus murmur beside them, and she reluctantly broke off the kiss to glance at him. His cheeks were flushed and his eyes were pitch black as he watched them. "So, you know how we like to kiss," he drawled. "What else would you like to learn, Miss Evans?"

"How you like to fuck," she breathed without thinking, suddenly feeling light-headed. She felt her face heat as soon as the words were out of her mouth. How had this situation spiralled completely out of her control so quickly? She'd had them in the palm of her hand when she'd first caught them snogging, and now… she was entirely at their mercy.

"Lily…?" Remus said to her, cupping her face in his hands and forcing her gaze. His eyes darkened and he looked at her with concern. "Are you sure about this?"

She nodded, letting his hands fall away and then pushing her robe off her shoulders. Her fingers started in on her blouse after that, slowly sliding each button through its tiny hole as the two boys watched her, their lips slightly parted.

"Severus," said Remus thickly, working to unfasten his trousers. "You start. I have another idea."

Severus glanced at him with questioning eyes but did not argue. It was the first stumble of apprehension Lily had seen him make since the evening began, but he quickly overcame it, turning back to her with a hungry look. In one swift movement he slid his hands under her open blouse and up her bra, letting his thumbs brush over her nipples as he pulled her forward and attacked her neck with his mouth. His fingers dug into her back as he clutched at her, his breath hot on her throat. She let her head fall back and sensation overwhelm her, with her own hands tugging at his trousers.

She never would have believed she would feel such desire for Severus Snape, but the way his hands moved and his lips reddened, combined with the way he had been looking at Remus had worked her into a near frenzy. She wanted to see him come undone, to see how he could make her come undone, with those rough kisses and urgent hands.

His fingers moved down her body as he continued to devour her neck. He reached under her skirt with insistent hands and cupped her arse, pulling her body against him as he sank back against the wall. She let her hips grind into him, feeling his hard cock through his trousers and wondering if he was hard from this, or from kissing Remus earlier. Both ideas made her moan, shamelessly and with a wanton desire as his fingers found their way past the seam of her knickers and began tugging them down.

She stepped back to wriggle out of them, letting her skirt fall over her bare arse and thighs as her knickers pooled on the floor. When she raised her eyes to the two boys again, she found Remus slowly stroking his cock, now freed from his trousers, and Severus just beginning to unfasten his. He paused when he saw her knickers on the floor and pulled her close again, his fingers sliding under her skirt once more.

She was wetter than she remembered being in a long time, maybe ever, the sensation of being here with both of them nearly overwhelming her. A dull throb was beginning to rise between her legs, aching for one of them to touch her.

She didn't have to wait long.

Severus's fingers slid up her thigh and through her curls with the same insistent impatience with which he had kissed her. She sucked in a breath at the realisation that he didn't waste time and he didn't fool around – the thought of him employing that same sense of urgency in his trysts with Remus made her shudder with pleasure. Did they meet here, or out in the Forest, or under the Quidditch stands, and just grind against each other until they came? Did it only take a couple of minutes before they were hard and coming all over each other?

A soft cry escaped her at the thought, and Severus must have taken it as encouragement because he became even more insistent, sliding one finger and then two inside her quickly and easily. She gasped at the way the feel of him inside her alleviated that stubborn ache, filling her while leaving her wanting more. She felt him spread the fingers apart inside her, not moving them together the way James sometimes did, but in opposite directions, as though trying to stretch her.

The sound of Remus's voice brought her back to herself, and she raised her head to look at him.

"When you're with a bloke," he said softly, as though he could see exactly what Severus was doing under her skirt, "you need to spend some time stretching the entrance." He held her eyes, a small smile lifting the corners of his mouth, and then he let his head fall back against the wall. She glanced down to watch his hand where it continued to lazily stroke his cock as he watched her and Severus, and Lily's mouth went dry.

This was what Severus did to Remus before shagging him, she realised with a fiery jolt up her thighs. He must move his fingers this way inside Remus's arse, or maybe it was the other way around, and this was what Remus did to Severus… Either way, the image it evoked made her knees weak. She moaned as Severus slipped a third finger inside her, continuing the stretching motions as each finger seemed to move in different directions. The mix of sensations was intense, leaving her aching for more and yet thrilled with what she already had.

"Okay," she managed to whisper, her hands falling to Severus's trousers and tugging impatiently. "Okay. I'm… I'm stretched…"

"Oh God," murmured Remus, his hand beginning to speed up on his cock. Severus was silent, swallowing thickly as he withdrew his fingers, unbuttoned his shirt, and then took over from Lily with his placket.

"Here," she said, pushing at his shoulders until he caught on and slid down the wall. When he reached the floor he grabbed his cock and with a groan he pulled it free from his trousers at last, stroking his wet fingers up the shaft and looking imploringly at Lily. She followed him to the floor, straddling his lap and letting her skirt fan out around his thighs. Her eyes dropped to his cock and she gasped, feeling that aching pull inside her again at the thought of Severus filling her.

She had never had anyone but James inside her before, but this felt so dangerous and naughty that she couldn't stop herself. The thought of feeling Severus inside her while Remus watched gave her a thrill. No one would ever have to know, she reasoned, and besides, they really were being so nice about teaching her the ways blokes shagged each other…

She grasped Severus's cock and raised herself up a bit, positioning him at her entrance and then pausing, searching for his eyes. "And if I were a bloke now," she asked in a hoarse whisper, "what would you do?"

He groaned at that, all the control he'd displayed earlier now quickly bleeding away. "I'd push inside you," he managed, his voice rough. "That part, I believe, is about the same."

She smiled at that, and then with one last glance up at Remus, who had a look of wonder and complete arousal on his face, she sank down, letting Severus push up into her. He was larger than James, and thicker at the base. She sucked in a breath as he slid inside, feeling her muscles expand to let him in, and she was suddenly grateful for the stretching exercise earlier. As she fully seated herself on his lap, feeling the cold press of his trouser buttons against her thigh and adjusting to the feeling of him deep inside her, she watched Remus move from the wall and sink to his knees behind her.

"How does that feel?" he whispered over her shoulder, gently moving her hair out of the way and nuzzling the back of her neck.

"Oh God," she could only gasp, raising herself on her knees again to let Severus slide out almost all the way, then letting him push inside once more. "It's… good," she breathed.

"Severus?" he added, and she looked up to see Severus's dark eyes fixed on Remus's face over her shoulder.

He nodded absently. "Mmm," he murmured. "Quite good." He eyed Remus again, his mouth twisting up a bit. "Would you like to…?"

"Oh yes," said Remus at once, and Lily's eyes widened. They couldn't possibly have ever done this before, and yet they were speaking as if they could read each other's minds. She moaned again as Severus pumped up into her, his thrusts becoming more powerful every time.

Behind her, she felt Remus's breath on her neck and his fingers inching up under the back of her skirt. "Would you like to learn about one more thing that blokes do?" he whispered to her, and in front of her, she saw Severus actually smile.

"What?" she breathed. "I– okay. If you think… I mean, yes…"

She didn't have long to wonder what it was.

Remus's warm fingers caressed the cheeks of her arse, moving in reassuring circles before gradually becoming bolder and slipping down into her cleft. He pulled her apart and she gasped at the rush of air that hit her just as she was in an upstroke, allowing Severus's cock to slip out of her again before slamming back down with increasing force.

"Relax," Remus whispered to her, and then she felt his fingers sliding through the wetness as Severus pushed in and out. He gathered some moisture on his fingertips and then moved them backwards over her sensitive skin until she felt him probing at her arse.

"Remus…?" she gasped, bending forwards in spite of her reservations. Severus's arms came up and embraced her, pulling her forward against his bare chest as they continued to grind together.

"Tell me to stop and I will," Remus said quietly, his voice firm and comforting at her ear. "But I think you'll like this."

Severus finally broke his silence to chime in. "There are many sensitive nerve endings in that area," he offered, rather clinically she thought, but with his cock still pushing inside her, she didn't spend much time worrying about his vocabulary. "It would be a pity for the queer blokes of the world to keep that information to themselves, wouldn't it?"

She caught his eye and let out a surprised sort of laugh. "All right," she said, shaking her head. "I've trusted you two this far, haven't I?"

"Just relax," repeated Remus, kissing her neck, and then she felt one of his fingers circling her entrance and pushing past it, just a little, just enough to send tiny pricks of light up her spine and down her thighs.

She gasped, leaning forward against Severus's chest even more, pushing down on Severus's cock and Remus's finger at the same time and barely able to believe what she was doing.

"All right?" he asked softly.

"Yeah," she whispered. "Yeah, just–" But sensation overtook her and she couldn't find the words.

The finger inched deeper, sliding in on the moisture from her cunt, and then it was moving, gently swirling around inside her.

"More," she whimpered, again surprising herself with her response.

She felt Remus groan into her neck and then insert a second finger, moving them cautiously together past her tight ring of muscle.

"If you're almost through teaching the lady the virtues of arseplay," said Severus rather suddenly, his face flushed, "I don't think I can hold out much longer."

Remus laughed softly at that. "What do you think, Lily?" he murmured in her ear as his fingers gave another twist. "Can Severus come yet?"

She could only nod breathlessly, feeling her own orgasm beginning to tingle in her thighs. With Remus's fingers firmly anchored inside her, she picked up the pace and lifted off Severus's cock, slamming down hard and letting him thrust up inside her. She rode him shamelessly, relishing the moans that slipped from him as his reserve faded. He clutched at her back and she felt his fingers digging into her skin as he neared release. With one final thrust, he groaned loudly and stilled, pulling Lily down on his lap as he went rigid inside her.

She felt his cock pulse and fill her and she leaned forward, capturing his lips in a furious kiss that left them both breathless. When she lifted her mouth away, his head fell back against the wall with an unceremonious thud, and she heard Remus laughing softly behind her.

"Your turn, Lil," he murmured. "My hands are busy, though."

She felt him double his efforts inside her, pushing a bit harder and then withdrawing to trace the rim of her arse and spark at the sensitive nerves there, as Severus's cock remained inside her, still thick and pulsing. Her hand dropped to her clit and she rubbed furiously, letting sensation overtake her and this entire unbelievable situation wash over her. She came quickly after that, feeling her cunt convulse and grip at Severus's softening cock while her arse clenched around Remus's fingers.

"Oh God," Remus groaned behind her. "Oh God, I have to–"

"Do it," she breathed, turning her head as he withdrew his fingers from her body and grasped his cock roughly. She glanced over to see Severus watching him from under hooded eyes.

"Here," ordered Severus in a low voice, jerking his head down and pushing his shirt open wider to reveal the dark hair leading down from his abdomen.

Remus didn't waste a second before obeying, crawling around from behind Lily to kneel in front of Severus and Lily's still-joined bodies. His fist closed around his cock and began to fly, his pent-up need apparently desperate for release.

"Oh yes," Severus began to murmur, and Lily's eyes fell on him in rapt interest as he watched Remus wank. "Do it on me, Lupin, just like that." Lily gasped as the filth poured from Severus's mouth in low tones, urging Remus on. "Make me dirty, just like you want to… I want you to… she wants it… let us watch you…"

With a strangled cry, Remus came so hard he doubled over, bent almost in two as he spurted thick and white over Severus's stomach. Lily felt the strands of come as they slid down Severus's body to where she was still joined to him, soaking into her and mixing with Severus's come as it ran over his softening cock and out of her body. The entire scene was so hot, so intoxicating, that she felt a renewed jolt of arousal at the feeling of both boys' come running over her and down her thighs.

Remus slumped sideways into the wall in exhaustion, his hand still cradling his spent cock and his head falling to Severus's shoulder. Lily watched them with wonder and admiration. And here she had thought the two of them had only been fucking all this time, when in fact there was feeling there, a deep emotion that she had never seen Remus reveal to anyone else before.

Quietly, she lifted herself up on her knees and let Severus's cock finally slip out of her. She picked up her knickers and gingerly slid them back on, wincing a bit at the wetness that immediately soaked into them. She rose to her feet and collected her books with quaking hands, pausing to give one last glance down at the half-dressed boys dozing together against the wall.

Just as she turned to leave, Severus cracked an eye open. "So," he managed with a smirk. "Any more questions, Miss Evans?"

"Er– no," she admitted truthfully. "I think I'm… yeah. I'm rather satisfied."

"Good," added Remus in a sleepy voice, opening his eyes and smiling at her. "And to think, we've been spending all our study sessions up till now actually studying." He shook his head sadly, then he gave Lily a wink.

"Well," she said thoughtfully, "there is that Transfiguration exam on Friday. Perhaps we should plan for some extra revising?"

"Gryffindors," muttered Severus with a shake of his head before closing his eyes again and letting Remus nestle closer against his side. "Always up to no good."

~~~~~

"So, did you ask him?" James inquired, scanning a Quidditch magazine as Lily slipped through the portrait hole twenty minutes later.

"What? Oh, yes," she said, her mind still spinning.

"And?"

"Oh." She considered. "Yes, you were right. He's definitely gay."

"See?" James rolled his eyes. "Told you so."

"Mm," she agreed, heading towards the staircase to the girls' dormitory. She struggled to put one foot in front of the other as she climbed, her mind buzzing with the events of the evening. "And I think," she murmured to herself as she caught her breath, "that I might be a gay man now, too."



-fin-



Feedback is always appreciated. You can leave a comment on Livejournal if you don't have an IJ account. :)