You have every right to be hurt, to feel betrayed by what happened. From my perspective, though, it seems that the biggest issue that you are dealing with right now is anger. For your own good, you have to let this anger go. Believe it or not, your anger doesn't do anything to her or to your husband. It only serves as a cancer to you. The longer you remain angry and bitter about what happened, the more miserable you will become. Please let it go.