Sounds a lot like me too Barkley, only I actually posted her letter so I could get the best help possible. I was also embarrassed! My wife says she has forgiven me, but no longer wants any intimacy and knows that will never change. She filed for D two weeks ago.
Long hill to climb, but I think she is worth it. I suspected mid-life crisis and menopause also in her case. I still think they are contributing factors, although I was the main factor.
Learn from it, be a better man and hang in there to see where it goes.
I really don't think my W WANTS to leave, but she doesn't think I can change. She can't believe the changes I have already made and the things I have told her. One time she told me "I didn't think you had this in you." But then I pursued and smothered her for 5 months, even though she told me not to, and drove her away anyway.
Wish I had found this site earlier. Don't make the same mistakes I did. Don't be needy and desperate to keep her. Be strong! You can do it.