KGirl, I too remember you from before you got married.

Yeah but I had a different name then and mainly lurked. Then I remember the yucky posts in marriage ministry... and here we are.
I would suggest counseling-- sometimes its nice to have someone to talk to that you can trust and has no ulterior motives. Is there a pastor or counselor that you can see? Also I would suggest getting involved in a SOLID church where you can make girl friends.
Your emotions steer you a lot, and that's not something you want to happen for your whole life. It doesn't feel good. I know its easy to be emotional as women, but all in all you want to be stable-- knowing who YOU are, what you stand for, and with interests besides wanting a boyfriend and a husband.
Boyfriends and husbands.... they're okay. But without there being a real *you* its going to be difficult if not impossible to find someone who really loves you and a relationship strong enough to ride through storms as well as good times. Please find out who you are, what you stand for, and some things that interest you and will help define you as an interesting person.
Whether you cheated first, or he cheated first, or his mother's uncle's sister cheated first I do not care. What is past is past and I believe in forgiveness and new chances. This is your new chance. Wash your hands of your past and create a new future for yourself.
In John 4 there is a story of Jesus talking to a woman at the well. You will find that he does not condemn her for her past(5 husbands and living with a man she is not married to), but shows her a better way to live her life.
Best wishes...