I know that this topic may be a little too personal and its also for me, but rn im getting out of one or trying and i lack irl girl friends to talk about this kind of things and a lot of times the feeling of loneliness and stuff makes you want to come back to things that you know are no good, so i would like to have some tips to read when im feeling weak, or listen to your experiences if you wanna share, or if any of you girls is in a similar situation to support each other and keep our heads high! The guy i was with, we were together for 4 years and he isn't and has never been violent to me, but he cheated, he has lied and basically made me feel like crap and killed my self esteem so... fair enough! lol
First, I am terribly sorry to hear about your experience. A monogamous relationship is a contract between two partners with a
known precedent that fidelity should be observed, zero exceptions. To violate that via cheating is to violate your partner. In short, you have experienced a type of psychological abuse, and nobody deserves that.
I imagine you might feel somewhat disillusioned about relationships; you might feel fear about dating and trusting others due to this experience. One of the most important things for you to do in this period is to process what you went through, to acquire a more lucid, objective perspective of what happened. Try journaling and writing about the experience. Talk to other women who have experienced infidelity - there are many support groups IRL that could be very useful for you. Sometimes anonymity helps us open up more. Sex and Love Addiction Anonymous (SLA) could be a good resource for you, as well. IIRC, SLA has an adjunct group for victims of relationship abuse. Last, you
do need validation - there is nothing wrong with that. It is important that you feel understood, that you are not overreacting, that your feelings are indeed valid. I'm just some random guy, but I am a very avid proponent of respecting fidelity (married guy here - I consider my marriage sacred). I care about what happened to you, for what it is worth.
As for feelings of worthlessness or fault - this isn't because of you. There is no excuse for infidelity in a monogamous relationship, period. The problem was this guy, his lack of respect for you and for the sacredness of trust in your relationship. I guarantee you his infidelity had nothing to do with who you are, but with personal issues of his own.
In short, I recommend talking to the other women on this site, sharing experiences, and reminding yourself every day that YOU are a badass for staying strong and moving on from a guy who doesn't deserve you (I don't need to know him to say this; real men don't cheat!) Hope this helps!