Tbh, that's what I liked about it. It was true. Having George end up with the love of his life and become this enlightened man would only happen in the movies.
I loved that she stayed with her husband, and her family. In movies, nobody cares about those things. Everythings black and white, and the protagonist ends up being a great guy, and the other guy in the girl's life ends up being a prick. It wasn't that way in this. This walked a fine line between both. It was realistic that maybe she loved him more, but there isn't always a happy ending. There are other factors at work.
I also liked that in the face of death someone can set their regrets straight, but as soon as they're healthy again it's business as usual. Personality issues aren't corrected that simply, if at all.