Wife wont admit to affair and its driving me nuts!

[Morbo]

Hi Cadet, appreciate those links.
I've read most before, I'm a first time poster
but a long time stalker here :-)

Thanks for your input Matrix.

I have not really told many people of my situation.
I was ashamed, guilty(I'm Irish Catholic lol) and everytime
I brought valid points about OM with my wife she managed to wriggle out of it and make me feel like crap.
I just needed outside, impartial advice, validation.

To answer your question on what I'm going to do.

When I really thought about everything, all the red flags, the overwhelming evidence and everything about last weekend it was like a switch went off in my head and that was it. I dont believe her now, I always gave her the benefit of the doubt. After all this was my wife, the love of my life , the mom of our two awesome girls. But my eyes have been opened, finally.
She doesnt know what I know(I was vague and non specific) but she's not even protesting her innocence anymore but still not admitting to anything.

I've been doing total NC the past 5 days and just going completely 180. I'm being nice, positive but distant and she is noticing. I'm not going 180 to get her back obvs, I just dont believe her and if she has done what I believe she has over the last year, the marriage is beyond repair. She keeps checking in on me, and called me out of the blue today for no reason to talk. She was clearly upset, asking what I was doing etc. I was nice but until the moment she decides she has something to say(like the truth) and maybe apologize I'm sticking to my guns and moving on with the divorce.