Start reading about affairs and how to heal from them. Surviving Infidelity is a good resource. First and foremost...go to C. Find out what issues there were in the M in the first place (on both your parts) so it doesn't happen again.
If you don't solve that, I can almost guarantee you that you will be back here again. I've seen it time and time again.
M-43 W-40 2D - 9 and 5
Emotion, yet peace. Ignorance, yet knowledge. Passion, yet serenity. Chaos, yet harmony. Death, yet a new life.