Bruce shivers at the feel of Tony's hand on his skin - its far more intimate than having a (surprise) handjob, really, because this is Bruce letting Tony touch him. Letting Tony come close to him, when the last person who could have ever come this close was Betty. And even that was a lifetime ago, back when he was still naive and optimistic and still thought he could have the world between his fingers.

Now, though. Now he's happy enough with this, happy enough that he can have this and not worry about the consequences. A soft groan slips out from his mouth when Tony moves down to his neck, and he buries the hand that's not on Tony's back into his hair, holding him in place because its a good spot, a nice spot, and he wants this.