Mulder watches her steadily, weighing the options: how badly he wants to be near her, the knowledge that she deserves better than anything he can give her. He doesn't get up, but he could be on the verge of it, the way a person looks just before they speak.

"I don't expect anything from you." That needs to be stated, he thinks, and while the obvious anything is sex, he means all of it. You don't have to take over for her. You probably shouldn't.