How can I get over my ex boyfriend that cheated on me?

By finding a few of all the other millions who have been in your boat to commiserate with.
By convincing yourself that anyone who would cheat isn't worth having you.
By surrounding yourself with friends and things to do, even if you aren't the life of the party.
By not thinking you need a man at the moment.
Do something men usually do, like learn how to change the oil in your car, or build a little bookcase.