LS and NS, you both might get some more insight into where you might be headed by reading posts on the MLC forum.
NoSale, you asked about fantasizing about other men, and now I understand why. It has happened a few times (maybe 3, max) that there has been someone in our lives that I have found very attractive and they have turned up in my thoughts quite a bit for a while. I kind of went with it for a bit, but then reminded myself of all the things I appreciate about my H, and the fact that I had vows to live up to, and put them out of my mind. Ironically, I think that's probably about the time my H was starting to go outside of our marriage.
I only know a very little bit about your situation, but find it very sad that anyone would put that much time and energy into celebrity fantasies. Real people aren't perfect all the time, aren't hot all the time, and comparing your spouse to some air-brushed, plasticized celebrity is - well, I can't even think of a word at the moment, but really, why would you want one of those creatures anyway?