No, actually it is your decision. You decided to stay married for the ENTIRE 2 year relationship with this other woman. She gave you ample opportunity to get out of your marriage. She now sees the writing on the wall, that you are like 99% of married men with mistresses, saying they will leave their wives but have no intention of doing so. You decided to stay in your marriage. Her decision is a REaction to your actions, but you choose to blame her and say that its all her fault. I can't help but feel that you're portraying yourself as the victim in all of this when you've had a very active role in the construction of this scenario.