She said it first. If she says it first, then he's allowed to say it, too - to acknowledge the elephant in the room, sitting there on the bed with them.

Mulder squeezes her hand lightly, letting himself focus in on what it feels like when her fingers lace his. He wants to remember this forever: the slant of the light, the scent of their bed, the sense of her skin resting against his. A little smile, mostly in the eyes, as he looks at her. "I did, too."