"Couldn't it?" This is, perhaps, even more interesting a twist than hearing her explain his past to him, without realizing just how close she is. "These are your cards, Scully. For decades, by the looks of them. Maybe they're responding to you as well as me."

Maybe their lives have been so densely intertwined at this point that one of them can't help but bleed into the other, psychically speaking. If he's willing to believe in the validity of tarot cards - and she's making a convincing argument here - then he needs to be willing to believe that her hands touching them matter as much as his.

(Or maybe he's just in the kind of mood that responds well to Scully's involvement in anything, including a serial killer incident from a time when they probably lived thousands of miles away from each other. She's never more beautiful than when she's trying to puzzle something out. He's not sure he's ever loved her more than he does in this moment.)