Cosmic irony, indeed. Of course: he and Eames end up on the same job, at the same restaurant, and now at the same hotel. Someone up there must have it in for Arthur...

He ended up walking out when Eames did, it being his floor also. He rolled his eyes at what Eames said, but his ears felt hot as he found out that they were staying on the same floor together, as well. "Why do you keep saying that. Not on a job." Arthur mumbled the last part. He did remember Eames telling him that and while he rolled his eyes then, he often followed the advice. But he didn't want to think about that too much, ended up bringing up other memories that Arthur would prefer not to remember (especially not in front of Eames).