You have piped in on my thread a few times and today I finally had some time to read through yours. I learned quite a bit. It's so hard and I'm sorry both of us have to go through all this pain.
I was looking at one of Sandi's comments about when she was a WAW. The thing that would have made her turn around on a dime was if her H started another relationship. Personally, I think my situation turned around when my W noticed other W pursuing me. She still thinks that I have a something going with another W. I don't, but I only let her think it.
I think you should maintain your boundaries but if you could find a female friend who you could confide in, go out with as friends, text you etc. that might go a long way in turning this around. Just my 2 pennies.
Me:49 W: 41 Kids=D14/D14/S10 Married: 15 Together: 16 Bomb: 08/26/09 Currently: separated but in the different houses.