She takes the lead on his underwear, so he gets out of his shirt, tossing it to the floor. In a moment or two, there's nothing between them but air - and Mulder closes the gap between them, his mouth finding hers again for a long kiss, building in heat as it goes on.

It's tactical, even as it's born of real desire. His cock's done very little besides lay there, despite his ardor, and the longer he can put off discussing it, the better the chances that his blood will start rushing in the direction it's supposed to.