He should've known that Danny would be insatiable, even when it comes to being screwed right into the mattress, and Steve's all the more grateful for it, because the minute his hips start moving, he doesn't know if they're ever going to be able to stop. He braces a hand up along Danny's head, leaning forward on his knees, driving deep into him with long, smooth thrusts. "You like it hard, Danny?"