If your main goal is to get your W back (and IMO that should NOT be your main goal) then why do you keep doing things that don't work? NOTHING you have done has worked. NOTHING. In fact the more you do the same things the more staunch your W becomes and that has been especially apparent over the past few weeks (her introducing OM to the kids, her inviting you out of pity to her parents house).
You know nothing you are doing is working. But you won't do anything else. I don't get it. I really don't.