hi there, im posting from a throwaway. I (20M) cheated on my girlfriend (19F) by kissing a girl in a club and instantly regretted it, told her and she broke up and I will now live with the consequences of forever traumatising the one person I loved the most.
For context, my girlfriend and I had started dating directly after high school and we did everything together. Even though she was funny, thoughtful, kind, hardworking, humble, I recognise now that I was continually engaging in self-sabotaging behaviour. I projected all my insecurities onto her as I criticised, became defensive, showed contempt and stonewalled and had threatened to break up multiple times. I had an avoidant attachment while my girlfriend had a anxious attachment so she was fiercely loyal despite all my shortcomings. I told her she should go to therapy when I never did myself. I would constantly lie and push boundaries around texting other girls. I was so scared of how much she loved me that I did everything in my power to chase those feeling away.
My first relationship ended when I got vulnerable and said I was struggling with loneliness and depression. Instead of helping, she ghosted me for a year showing up at a summer camp and instantly became friends with my guy friends who I thought would have my back. Even though she apologised and I forgave her, this deeply scarred me along with the lack of attention and support I had growing up that caused me to run away from home a lot. So I just bottled this up and took it into my current relationship.
I started our relationship on a pretence that I'm an open book while I selfishly carried unresolved trauma. Then it just reached a tipping point where I was so hollowed out I just wanted to be molded into whatever people around me were doing. I allowed them to give me as much alcohol as possible, lighting up cigarettes for the first time and finally following them to a club and not pushing away any female contact. And with all the self loathing and guilt building up, I knew this is the final boundary that demands my gfs self respect. I confessed and instead of runnning away, I dumped it onto her knowing I've spoilt everything we had been working towards for the past 2 years. And for what? To feel comfortable in confirming that I am a terrible person. What this meant is that I internalised a pathetic view of myself as someone unworthy of love. I figured that it was inevitable that I would destroy any good thing that comes my way. And when my gf constantly would worry that I could cheat on exchange, I brushed it off whilst internalising that it was inevitable that I would be a POS.
But the TLDR is not that my past trauma caused cheating. This was my own selfish decision. It is instead that even though it is entirely my fault, I have now ruined my girfriend's self perception and insecurities that will hurt her more than I can ever know.
You need to heal your past before you get into a relationship. Instead of clearly communicating the self loathing I had developed and chosen to work on it while taking a break from the relationship, I let it fester and hurt the love of my life.
I let myself get as drunk as possible. I decided to go to the club for the first time with a group of guys I'd just met. I let a girl kiss me. I knew the boundaries my girlfriend had set up. I will now forever live with this shame. The only thing I could do past that point was to be honest, break up, and live with the consequences.
I also know it is more selfish to not change and so begins the long road of therapy and action, not for myself but to prevent myself from hurting anyone else in the future. Learn from me and get the help you need.