"Yeah, well I know that now. But I wanted-- I don't know. You probably never felt like this with anyone - but I was so impressed by you, I always wanted--"

He trails off a little, then laughs.

"I wanted you to really want me back, and not just go along with me because we were trapped in space together and I was super available."

He's not worried that this is the reason they're together now, but he's pretty sure that is the reason they were together at first.