Forgiving my gf for cheating [cuck perspective]

The day my girlfriend first told me she cheated (yes first because there was a lot more). We were making out in her bed when I went over and she was home alone she told me while she was ontop of me that she wanted to tell me something I said what is it. She told me her and her friend kissed and told me she was being serious. me being jealous I was confused and felt betrayed but at the same time I felt horny and didn’t know what to say. I asked for more info and she told me he went in for a kiss and she didn’t move back or stop it. She said this was more than 2 months ago from then and I asked her why she waited so long and she told me because she forgot and then she made out with me. I’ve never felt so powerless and so turned on before I just made out with her back and after she asked “do you forgive me for being a bad girl” I couldn’t even form a thought before immediately saying yes I do. She smiled and said “good”. She told me if I hadn’t been such a bad boyfriend she wouldn’t have to cheat and kiss other guys and told me to try harder and I ofc said I will. This was one of the 3 other times she cheated that I’ve forgiven her.