Sam never thought that he'd be able to fall in love with someone. Not again; not after he'd fallen for Jess and had been planning on marrying her and everything. There had been no one else. And that was probably because Sam refused to let there be. But then Heather came along and he found himself constantly running into her, constantly wanting to talk to her, and constantly missing her when she wasn't around. Especially when he was stuck in that alternate universe. She was one of the few people aside from Dean and Jo that had been stuck in his head. He'd pictured their faces through the torture and the nightmares. They were the people who got him through it all, even if they never would really know it. But that was besides the point. Fact of the matter was, Sam had let someone get close. By accident, at first. And then he found that he couldn't resist. He couldn't fight it.
Now he was here. In his hotel room, looking down at the very person who'd broken through that barrier of his. He loved her. She loved him. He could deny it all he wanted, but there wasn't any point. Not when the only reason he had done it was to protect them from the things that always chased after him. Especially not when Heather had gotten hurt recently. Because he wasn't around, just like she said. Sam was sure that he'd have been able to stop it otherwise. Being close was the only option. It was the most reasonable thing ever and he couldn't help but wonder why he hadn't seen it before. Jess had died like that. He had left her and the demon had gotten to her. But no one would get Heather. He didn't plan on going anywhere.
He smiled down at her, then leaned forward and kissed the top of her head. "Good. Because I'd be even more cranky if I found out you were pulling another one over my head."