"You do, huh?" Tony says with a grin as he fans his fingers out over his collarbones like he's trying to touch as much as possible all at once. It's nothing he hasn't seen before, Steve's bare chest, given they all live together and Steve's tendencies towards skin-tight shirts. But it's not a sight he thinks he might get tired of. And being able to put his hands all over it is a very different thing altogether. That, he definitely appreciates.

He's also getting the sense that Steve has a serious thing for skin contact. Tony's known that Steve is a physical guy, but the responses he's made to even the slight touches so far have been fascinating. And hot, obviously, but that's pretty much a given for everything at the moment. It makes the scientist in Tony want to see just how far he can get with nothing but his fingertips.

Later, maybe. For the moment, he strokes his thumbs along the lines of Steve's clavicle, watching his face with a soft kind of amusement.