It was good -- the whole of it really. Because Tony didn't need to think about anything else now, every last one of his sense taken up by Steve.
His kissed back, fierce, practically demanding, right up until Steve got his hand down his pants and then it was simply a matter of not falling apart immediately. Maybe they had waited too long, if this was what it was going to be like.
"Don't stop," Tony said in reply, wrecked where earlier he had only been ruined. It seemed almost unfair how often he was coming apart these days, even if this was different by every measure. He shifted slightly though, arching his back, fucking into Steve's hand right before he pulled Steve in closer so that he could wrap his fingers around the both of them at once.