I didn't cheat through having Sexual contact with another girl but through having a relationship with another girl. Which I think is worse. My first girlfriend V. was my best friend before and when we were 12 she had a big crush on me. Since we were very good friends and I didn't really have a crush on anyone at the time I agreed to being in a relationship because back then I thought she'd get bored of me in a few weeks cause at that age relationships are just an imitation of what you think adults would do. I never had feelings for her other than friendship but I wanted to keep our friendship no matter what. Turned out I was wrong. Age 19 she was still with me. I've never had sex with her and she knew that I wasn't up for it but we kissed and did other things couples would do. Then I met my current wife L.. I for the first time actually fell in love with someone and she was into me as well. But I wasn't sure if she'd actually stay with me cause we were from two different worlds basically. L. is from a family of academics who are upper middle class, she is super smart and studies dentistry at university. Meanwhile I was some drug addicted bum who dropped out of school and has been to juvenile. V. was from my world, we grew up together, lived together, knew eachother down to the smallest detail. I thought L. would never stay with me in the future and I also didn't want to lose my best friend over something that has no perspective to last. But I also wanted to get to know L. and at least try to have a relationship with her. So I cheated. I didn't break up with V. While starting a new relationship with L. I never loved V. and I should have never agreed to having a relationship with her just to make her happy and so that I don't loose her cause in the end when she found out it was worse for her than if I had told her I wasn't into her like that when we were 12. I really regret it but I am glad that I did get to know L. because we got married 1 1/2 years ago, she helped me quit drugs and we both lead a somewhat decent life now. I also learned from her that people aren't always how they seem and that problems aren't always related to money. Despite all the differences we managed to help eachother grow. V. Eventually forgave me and she found a man who actually loves her and recently managed to quit drugs too and went on a trip to Chicago which used to be her biggest dream in life. My Mama and her loved the blues brothers and always wanted to go to the city one day.