[He's not sure why he's suddenly feeling more intensely guilty right now than he ever did about actually cheating on Lux, but he's pretty damn sure he shouldn't. It's just that suddenly everything feels all wrong, the tension between them is absolutely unbearable, and he doesn't know how to fix it.]

Well, we're- I guess we can both be pretty casual about that sort of thing. And until I find someone that I- I mean, someone that I want a proper relationship with, it's just... a thing.

[Another beat, and then he adds anxiously, without really knowing why:] Does it bother you?