Do I really have to tell my husband I cheated on him?
When did you cheat on your husband?  How do you feel about it?
I cheated on him like 10 years ago with his nephew, I always wondered how it would make him feel.
You did an awful thing by cheating on your husband. It's not a right thing so you should be ashamed of it.
All you are doing is stating the obvious.
You really need to be honest with your husband. From there you can both decide if you want to continue the marriage or not. But continuing the lie to him isn't going to help the situation at all.