He grins, the way he hasn't in what feels like years. She can't ask how, but he already knows it's going to happen. He knew then - he had to believe, couldn't accept anything less than Scully's life and happiness - and he doesn't see any reason not to share now. She deserves a little hope for the future.

"It never came back." He wants to see her face, wants to feel that moment of oh, God, Mulder and know that it's a positive thing here. It's been so long since it felt like Scully was happy to hear anything that came out of his mouth. "Once we figured out what to do - that was it. You're as healthy as anyone."