I know how pissed my W was when I confronted her with OM35. When I walked into our bedroom with him and her under covers, regardless of the fact that he was fully clothed. In the morning after I had been made to sleep on the basement floor. And how pissed at me she was when I confronted her about the video of her and him. And she would have been pissed at me had I mentinoed anything about the fb pictures of her and him...
Point is... they get pissed when confronted about something that they are obviously ashamed about enough to lie about it, not just to us, but to others...
sux, man... I feel for you. Until you get over the shock and pain and anger and all the other emotions, I won't even ask you why you needed to use so many words to tell your W you were done.
Take care of yourself for today and the next couple. It will hurt, but it will start to feel better. Eventually...