Initially he doesn't even pay any mind to Arthur, ready and armed with some comment that's halfway between an innuendo and advice for Natasha to take however, but he realises Arthur's stopped before the comment makes it out of his mouth. More than that, he sees the slump in his shoulders and it takes everything in Eames not to dissolve into hysterics as he looks between the two of them.

And to think, he almost opted to stay in tonight.

"This is who you ran out on?" He claps his hands together and squeezes, almost as though praying in thanks to some higher power for a brief moment, utter delight stamped clear across his face, "amazing. Truly."