I feel terrible, I've been cheating on my husband for over a year.
Wow, that's really shocking. Why have you been cheating on him for so long?
It just started with one kiss and went from there. I've wanted to divorce my husband, but I couldn't bring myself to tell him.
You need to confess this secret to your husband because it's not fair to him that you've been cheating on him for a year. If you're not happy then you should end your marriage.
I know I have to tell him, I just don't want to break his heart.
I think it's gone on for too long and you have to tell him. Neither one of you will be happy staying in you marriage. It's time for you to tell the truth.