I cheated. I'm so, so sorry.

It's been almost five years, and I still can't sleep some nights. I cheated on Mark. We were only together for a year, maybe a little longer, but he was...good. Too good for me, I guess. I was young and stupid and thought I wanted excitement. I went out with friends, had too much to drink, and slept with some guy I barely knew.

I never told Mark. I just broke up with him a few weeks later, saying I wasn't ready for a serious relationship. He was heartbroken, and I let him be. I didn't want him to know the truth. I was a coward.

I see him sometimes, around town. He seems happy. He's married, has a kid. I want to tell him, to ask for forgiveness, but what good would it do? It would just hurt him all over again. So I carry this around, this heavy, awful secret. I'm sorry, Mark. I truly am. I hope you can find it in your heart to forgive me, even if you never know why.