Seeing that warm little smile physically hurt, but Poe actually was glad, in a way. As much of a selfish dick as he could be, he wanted Finn to be happy.

Sure, he'd prefer he was happy with him, but. He could deal with the fact that it never would be.

"Well, yeah, the war was a lot on everyone." That's what he assumes Finn means. "But I'm - I'm glad things are falling into place, then, finally. It was a long time coming." Finn had been holding a torch for Rey this whole time, so - must have been stressful if it wasn't returned until recently.

He almost said something like 'we should all hang out sometime', but then realised he really wouldn't be able to bear hanging out with Rey and Finn and seeing them be happy and together. Nope. Not yet. Couldn't do it.

So instead he just gave a rueful smile and a shrug.

"Yeah, we'll see. Just trying to enjoy it for what it is, right now."