I got in a huge fight and I was yelling.
Were you fighting with your girlfriend?
Yes. I told her she was the dumbest piece of crap on the planet and that I never loved her.
It wasn't nice of you to yell at your girlfriend especially considering all the terrible things you said to her. If you treat your girlfriend like this she might break up with you. You'd better apologize to her.
It's her fault. She's the reason I did this and I don't care if she broke up with me. I never liked her.
Even if you don't care about breaking up, yelling at her and saying awful things to her was extremely rude, and you should tell her that you're sorry. No one deserves to be treated that way.