My fiancé cheated on me 3 weeks ago with my maid of honor which was 3 months before our wedding I don't talk to her anymore and he said he would never do it again should I trust him?? And how do I get over it all?

Why get over it? I'd kick his butt to the curb. Be glad you found this out before the wedding.

Why get over it? I'd kick his butt to the curb. Be glad you found this out before the wedding.
You think he will do it again?

It's always easier the second time.

I certainly would get him into couples counseling, like yesterday!

RUN! If he will cheat on you with someone that close to you, he is a snake and I promise you he will do it again. He does not respect your relationship to do something so terrible with someone you trust. Get out now and save yourself from a life of lies and betrayal. If you marry him, you will live to regret it and have a rough road ahead. Of course he says he won't do it again, its just another lie to deceive you. I was with a cheater for 7 years and heard the same promises. Save yourself the anguish and get rid of him asap.

I believe once a cheater, always a cheater. The reason why this decision is so hard to make is because you love him and have so many wonderful memories with him. But suddenly those things no longer matter when you find out he's cheated on you with someone else. Whether it's a close friend or family member, it doesn't matter who it is. Its wrong! And you will live the rest of your life in "what ifs" and have a lifetime full of making accusations and never fully trust him. It will only get worse and the more time goes on the more you will think about it, the harder it will get for you and the angrier you will become. Its best to let things go. Whether you are happy or not, you need to ask yourself if you will be truly happy for the rest of your life with someone who you trusted and has now betrayed you? You can go by anyone's opinion but its what's going to make you happy, and its what YOU think is best for YOUR life. Best of luck