On the other hand, if they start feeling guilty about their past, then they didn’t deserve the beating you gave them.
They’re a person who really wants to make you happy and to be with you, and you feel bad for hurting them over something they can’t control now.
In a way, it feels like they cheated on you (and you can’t get it out of your head).
Unfortunately for them, they didn’t cheat on you, but they get treated as if they did.
If you let all of your hurt, anger, and sense of injustice build up inside of you, you’re going to take it out on them whether you intend to or not. You’ll get irritable and won’t tell them what’s wrong.