I guess it wasn't a triumph or anything...Spoiler!
I don't know about what you guys think, and I admit that April had an annoying quirk here and there, and she cheated too, but I found Frank to be a complete jerk. The way he treated her was awful.
"Well, I guess it wasn't a triumph or anything, was it?" That was his very first "present day" line to her in the film, right after the play. Then, on the way home, he's needling her while trying to act as if he is doing it to comfort her. She then asks him to just drop it, and what does he do? He gets even worse.
With regard to them moving to Paris...I don't think that Frank, deep down, really had any intention of moving after all was said and done. If the job offer hadn't come up, I believe he still would have found some excuse to call off the move.
It was the needling from him that irked me the most. The constant need to have the last word. When she asks him to not say another word about something, he then tells her to not worry about it, because it doesn't matter anyway. Sheesh Frank, just shut up...get it?
I know there is a lot more to this film and their relationship than the couple of things I have talked about, but I would no doubt say that if you had to pick one to blame more than the other for the crumbling of their marriage, I would definitely say it's him. Again, I know she does have her own problems, but he was just a jerk. Not a misogynist, but I think he definitely felt his well being was more important than hers.
It wasn't until it was too late that he realized what he truly had and what he lost.
This is just my opinion, and I'm sure there are opinions that are the complete opposite of mine.
The plural of mouse is mice. The plural of goose is geese. Why is the plural of moose not meese?