Oh no, I am very sorry Monica.
First, I would ask myself why he cheated on me. If the relationship was good, why did he cheat? If something was bad in the relationship, maybe he cheated because of that. If you were a good girlfriend (i bet you are) then he might not be a good man. Some men want to have different women.
I think you should move on. Some men make mistakes but other men are not loyal. It is the same for women, too. It all depends on the person.
I hope you find happiness!