Often when we are hurting the feeling is so uncomfortable we want to blame others and usually that "other" is our S.
I think your sarcasm with me is another form of that, I don't take it personally at all because I know you're hurting, but think about it. Check out the definition of sarcasm.
If you do this with your W, along with the badgering it is understandable that she would want a third party there.
These things are fixable but you have to decide you want to fix them.
Me 57/H 58 M36 S 2.5yrs R 12/13
Let me give up the need to know why things happen as they do. I will never know and constant wondering is constant suffering. Caroline Myss