"I know you will," Sirius whispered. He felt Remus' arm around him like a security blanket, warm and comforting and right. It was odd. Ever since the, well, thing with Malfoy Sirius could barely stand to be touched. When James had accidently grazed his shoulder he'd nearly jumped out of his skin, and a flirtatious touch from a Ravenclaw prefect had left him hyperventilating on the floor of the bathroom. But Remus was different. He needed to be close to Remus, needed to feel his heart beating. It was the only time he didn't feel like the world was coming to a close.
It's because you love him, idiot.
Sirius couldn't help the shudder that ran through him. He didn't want to think about that, not so close on the heels of his near disaster after the Full. He knew what it felt like now, to have someone take advantage of you when you were weak and frightened... He never wanted Remust to know what that was like. Especially not from someone he was supposed to be able to trust. No. He was going to have to fight these feelings. Besides, Remus deserved better than him.
But he couldn't bring himself to pull away. Not when his muscles were finally unknotting, and his stomach settling. Not when he could feel Remus' calm strength keeping him above water. It was selfish, it was so terribly selfish, but Sirius couldn't let go.
"Don't leave me?" He begged, hating how needy and childish he sounded. He didn't want to be this person.