Hang in there man. I'm going through a similar sitch. My wife wants out, and has given me all the classic MLC and WAW lines/explanations.
I know exactly what you mean about the heart ache. All I can say is good days/bad days. I have tried focusing on the kids and working on me. I still struggle with the emotions, but do not let that show to my W.
I have also reconnected with God, and I find that to be the greatest source of strength in this crazy time.
