Update. I filed the financial separation. He responded and added the dissolution of marriage. So, I'm on my way to becoming at single woman. Since my H is not the man I knew or the father I knew to my girls, I have no emotion going into the divorce. I really don't have emotion about him at all. My daughters have decided not to have a relationship with him at this time. It has been a very difficult time for them. My daughters and I go to therapy. A couple weeks ago I met a wonderful man that I love spending time with. I am becoming happy again for the first time in a couple years.
I'll say what many have already said on this forum. Six months ago I would have never believed I would feel the way I do today. It was a very painful journey and I know the battle is still not over. But, there is life after a spouse cheats and walks out.
I plan on taking my new life one day at a time with the new man in my life. I will continue to help my daughters thru their feelings about their Dad. I will be ok.