This is such amazing writing from start to finish. I was going to single out Wakka's goofhead riff on poetry and deflated blitzballs for comment, but you just kept going with the brilliant commentary (it's like he was trying to write like YOU for a moment there) and getting better.
It all builds up and everything finally seems fine and then you slam that last sentence down and remind us that it's not happily ever after, or at least not happily before, and Wakka might have betrayed her, or at least that he's not sure he wouldn't have. What an insight to throw in there, just then.