What if I was the crazy ex girlfriend and I regret it so much?
That's not good. What made you the crazy ex girlfriend?
I was very angry at him
It's not good that you were a crazy ex girlfriend, but it's important that you've learned that you shouldn't act that way. Learning from past mistakes is very important.
You are right. I should have stopped and realized I was wrong, that's on me.
I am glad that you realize that and that you are learning from it. Next time you will know better from making this mistake.