Yes, it was about 8 month's ago my W told me that she was dating other men. I was confused, I had no idea why she was doing this while we were married, and I reacted poorly.
I think you have reacted ok so far, and you have the advantage of being on DB. Just know that if you don't throw in the towel now, that its still a long road in front of you. But I am happy that I have chosen the path to stand for my marriage, to work on myself, and that I did not rush into a divorce.
Do you think your W is in a MLC? What was her relationship with her father like growing up?
No one should have to go through the pain that you are going through now. Stay strong and take care of yourself.