Finn is always the first on the tarmac when Poe gets back, the one who makes him SLEEP, and rest, and eat properly, and exercise. He keeps an eye on him when he has nightmares, and basically can bully Poe into behaving. The others call him Poe's wife, and Finn has no idea what that means until he realizes that he's getting kind of gyped in this whole deal, because while he does all that other stuff, he's not getting laid. So he lodges a very convincing protest: either he gets some loving or they're getting a divorce.

(Poe does not want a divorce.)