"I dunno, last night was the first time I saw you outside the shatterdome. I don't know what you do when you're not teaching people because you're always on!" As much as Mal says he isn't Clair- they have that in common.

It's part of why York never got a chance to say anything he wanted to. Why they never DID anything near as often as he felt they could.

Talk to his doctor. And what? Open this whole mess again? Whatever pleasant glow the night before an the realization that he was compatible with someone might've given him is gone. "Don't bother. Just- forget it."

What's the point of being compatible when it won't work?