Tony can feel the shift, and he revels in it. He soaks up the little moments of consent like they were rays of sunlight from behind Bruce's permanent cloud of enigma. The man shields himself so well that no one seems to pick up on how much of Bruce is really there, quietly waiting, but present nonetheless.

He gets a little drunk on the moment. Bruce's willingness is everything that he wants, and he moans into the kiss when Bruce reaches up to touch him. He has to pull back to catch his breath, his muscles tightening as the fingers explore them. Tony hasn't needed anyone quite as much as he needs Bruce right at that moment, and if they end it here, before he really gets to feel him, he might not recover. That's what flashes through his mind as he pants Bruce's name and arches into him, losing himself momentarily to the need.

"Let me take them off. Bruce. Let me touch you..."

Which is the request he gets as Tony fumbles with his pants anyway, loosening them so he can reach beneath the cloth and stroke the arousal growing there. He's still being gentle. Fondling, not just jerking him off, but there's clear intent in his movements.