CP, no matter where we are in our journey, finding out something like that hurts. I am so sorry.
Only you can answer those questions. I will tell you for me, most of it didnt really matter at the end of the day. The marriage was over. She wasnt the reason. She was a symptom of a crisis. So, the details of that just didnt serve me well.
I guess you have to ask yourself, will knowing make a difference in your life. Will it move you forward or hold you back?
You know this has nothing to do with you and everything to do with him. He is broken and still trying to find what will fix him.
You know your truth, sweetie. Make your life amazing.