Based on other's reactions, I am assuming you cannot just leave your marriage, and that you must not anger your husband, for your own safety. However, I don't personally know your circumstances, so perhaps I am wrong. I will give you the advice that I have......focus on your own happiness. Whatever cultural limitations you may have, work within that framework to make yourself as happy as possible. Do what your obligations are to him, but do not focus on him or his infidelity. Focus on things you love, and that make you happy. Petty revenge will not make it better. Regaining your self esteem will. Perhaps it was just a one time thing? Maybe the marriage can be repaired, in time. The important thing is to strengthen your own soul and heart right now. I know it sounds hard, but just don't think about the affair. It wasn't your fault. It's his problem that he's too dumb to honor his marriage vows, and can't control his "urges". It is never about the wife, when the man cheats. It's because he has issues. Also, perhaps you can turn to your religious community for some sort of marital advice or support?