Rachael, I'm sorry things turned out the way they did last evening.
Mlcers will not divulge their activities w/the ow for a very long time, if ever. Even though I knew about my xh's ow for a very long time, through a PI, he denied it each and every time it was pointed out to him by family and friends. I had been divorced for about 2 years when my bil passed away and he started contacting me about the funeral services. One thing led to another and I managed to trip him up and he admitted that she was still in his life. From then on, he's not denied her to anyone. What I'm trying to say is that they go to great lengths to keep the op a secret for as long as possible.
Today is a new day and I hope you are feeling better. I know it's difficult when you are thinking of ending a marriage and know that your spouse has not been faithful or truthful w/you, but I want you to know that you will be okay.
Thinking of you. I hope that you are okay.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.