Was it wrong?
Me and my GF had a fight, and in a moment of anger, I started insulting her friends. I apologized about it later, but she went on to tell her friends that I talked about them behind their back. I do admit that it was horrible for me to trash talk her friends, but I think it was very stupid and immature of her to tell them, especially since she knows I was in a moment of anger. Do you think it is horrible as well?