Thinker gave you some great advice. Really spend some time pondering it. My sitch is very similar to yours and Thinkers. So, I could have written much of what you wrote.
Focus on Thinker's suggestion of just being happy being you. This is a critical element to recovery. And if it is not "repaired," you may find another relationship, but the same issues will follow you.
I, too, thought I had made progress when I could say I accepted that my W wants a D, b/c I would go out and find the next Mrs. GIMA. But, that overlooked one key issue: relying on someone else to make me happy. And that is no one's responsibility but MINE. Otherwise, I will always end up disappointed, hurt or angry.
Most of us men believe we have to have a woman in our lives. Well, we don't. It can be a want, but it is not a NEED.
I have followed your posts, and will continue to do so. Let yourself grieve over the loss of your M (the old M). Unfortuantely, you have to go through that to get to the next part. But, it WILL get better. Grieve, but keep walking towards that next phase.