You are not alone here....we are all pretty much in the same boat. This was totally unexpected (or pretty close to it). In my case and in most others I think, there is another person involved. If that person is still around, turning this around is near impossible. I think you need to get to a place where you have to accept what is happening. Do you think I understand my W's actions in the last 1.5 years? I have to accept that she lost it big time .... back somewhat but not all the way. During the time that my W was way out there, a baseball bat to her forehead would not have changed anything, let alone a letter. In my opinion and for what it is worth, the day she feels that you have detached is the day she "MAY" have second thoughts. Sorry to be so blunt my friend but that is the reality of our situations.