"Yeah," Arthur says softly, feeling like this is not the time to say something like 'you're welcome.' He keeps his sober gaze on Eames for a moment and then takes another sip from his beer. He's just going to wait this one out, until Eames either tells him to go or seems to be in better spirits.

It's not that he's scared for Eames - he's sure the man has seen a lot of terrible and endlessly frustrating things in his lifetime and he's managed to make it this far - but he does know how hard it is to go through that alone and he knows how hard it is to think straight in those situations. There's a lot of pressure on Eames to think straight right now. It must be almost suffocating. So Arthur's gonna stay and try and take some of that edge off, because they're friends, and because Eames opened up to him. He feels like that's important.