Is OTHER wrong in the post ? POST : So I recently started dating someone that one of my friends doesn’t like and she kept trying to brake us up and kept calling her a slut and shit. Am I the asshole for telling her to fuck off?

Backstory: Me and this “Friend” who I will not name for her privacy, have been friends for about a year and a half now and its the same with me and my girlfriend, I didn’t expect my friend to act so rash about me dating her, I mean, I knew they didn’t really like each other, but I didn’t know it was gonna be like that. And now that me and my girlfriend are dating, she’s acting like a total asshole, calling her a slut, and a bitch, and pretty much insulting her every chance she gets.

Edit 1: I did not expect this post to gain any attention whatsoever, but consider that it’s got some traction, I feel I should give some more context. Me and the “Friend” that was being so rude to her haven’t been talking lately, especially since I live more towards the northwest right now and it’s been extremely cold so we haven’t been able to see each other as often, but she’s started being a little nicer to her now, so that’s good. I’ve decided that maybe I should stop communicating with her for a while, as things are a bit off right now, and I feel it would be best to only talk to each other when necessary, but next week it’s supposed to be warmer, so we’ll see each other again, I just wanted to give a bit more information about what’s going on since a lot of you are asking.