The groan comes out without thinking as Bruce tightens his hold on Tony's hair, and more sounds of pleasure come from him as Tony grinds against him and sucks at his neck. It's good, it's really good, and Bruce thinks he can live in this moment forever.

When Tony slips his knee Bruce lets out a short, needy whine that he didn't think he could make, and he tugs at Tony's hair, pulling him up so that Bruce can lean in and kiss him deeply. It's more of an impulse than anything else, but right there and then that's the only thing Bruce wants desperately and he hopes that Tony can oblige to it.