Help.. I still think about the time I got cheated on

It has been more than 10 months since my boyfriend cheated on me with my “best friend/ close friend”. We got back together 2 months after it happened because of course I broke up with him, and he was trying to fix everything. Since we got back together, now, I trust him and I love him a lot. We grew together and since that happened, he had shown me that he changed and I haven’t doubted his actions since then. So we are great now and he showed me how sorry he was and everything for 2 months. I don’t have a problem with him anymore. We’ve been together for 2 years, known each other for 4 years.

But.. tbh almost every night since it happened I can’t get it out of my hand. It’s so hard and I forgive him. But I keep thinking about that bitch, that dirty ass hoe that did me wrong too and how she wasn’t even sorry and lied about everything when I confronted her. I have so much anger towards her since my boyfriend apologized for his actions and was sincere and begged to be listened for his apologies. But that girl, did nothing. In person, id see her look at me like I’m the one that did her wrong and I am so furious every time I think about what happened because it is so fucked up.

I have no idea how to stop this anger and to stop thinking about it. What do I do.