God, is there anything worse than the idea of telling Arthur to stay because not being on his own right now sounds pretty good.

Well, yes. It's part of why this situation even exists to begin with, but it's still pretty awful. He doesn't want to want that, it feels like an admission of weakness. And maybe that's fine for other people, but not for him.

Eames sighs, "I'm not asking you to leave." Which is the best way he can come up with to say it without saying it, "but I'm pretty pissed off right now. You might not want to be around that." He says it evenly, it's not a warning, but Eames doesn't do open anger in part because he knows he's so unpleasant to be around in ways he can't control when he is.