This is just KILLING me though. What if I"M WRONG!!
Morbo,
You're not wrong. I know because I went through the same thing. It's a cruel game that your wife is playing.
In my case, my wife (now XW) kept me on the hook for a long time; she claimed that the OM was "just a friend" and that I was just jealous. She eventually suggested MC. (She didn't originally want MC, but I think she suggested it so she could use it as evidence that she was trying to save the marriage.) We went to MC and the MC saw right through my wife's bullsh*t. My wife stopped going after the third session. My MC became my IC and she kept my @ss on the straight and narrow.
I even tried to kick the OM's @ss at a public venue, but there was a cop nearby; the OM even told the cop that I was just jealous and that there was no affair. The OM is a total wuss as well as a useless piece of flesh.
Anyway, thanks to my excellent IC, I was able to step up to the plate and do what needed to be done.
I know how much you need external confirmation that you're not wrong so here it is: YOU'RE NOT WRONG! You're wife is playing you and you need to stop being a dumb@ss and come to your senses.