>>Maybe its failure I can't deal with. Perhaps this is the only thing that I have ever failed doing....<<
You are old enough to remember the movie "Kramer vs. Kramer" and the scene where the lawyer is badgering Dustin Hoffman on the stand about losing his job and marriage, asserting that he had "failed" at a man's two most important obligations.
I felt that way for a long time after d-day: I was NOT going to fail at marriage. I insisted on counseling, twice. Once before the affair and once just before the separation and divorce (six years later).
Guess what?
I didn't fail at marriage. Someone else did.
Once I truly accepted that there was NO WAY for me to control another person's actions, EVER, I was free of all the crap dragging me down, and free to live my own life. In contrast to your life, mine IS hard...yet I am happier than I have been anytime in the last 10 years. (Was married 21 years.)
Sage, your exH is doing exactly what he wants. Why don't you do the same for yourself? Remember, if what you want is for someone else to change his mind and/or behavior to agree with what you want, that doesn't count. Spouses and ex-spouses aren't things to be manipulated and formed. They're people to be accepted at their word, whose choices need to be honored.
If they want out, I think we have to let 'em out. In my case, I told my wife that she needed to be really sure because there would be no turning back and no second act. That's my story and I'm stickin' to it.
Chris.