Your W sounds like my H, a lot like him. I am completely shut out from anything in his life, except for the kids. When we go to functions together, I think "Everything thinks he is fantastic, if they only knew". He is all smiles and laughs for everyone else but me. Nothing left for me.
Isn't it lonely?? And yes, H is so far gone, I don't see him ever admitting to messing up as badly as he has, then wanting to return, having to deal with the mess he made.
"In my head I keep thinking that maybe we do need a break from each other, as my emotions are changing, and annoyance is starting to creep in. I think my limit is reached emotionally.".
I couldn't have said that better myself. I'm shredded.