Ok friend DRAMA i really need help?

I have had drama like this If she is calling you names and making funn of you dont be her friend IF you can t make funn of her and she can make funn of you dont even bother I broke up and his (girl) friends started calling me a slut and B**ch and MY name is marissa and they started calling me iram which is my name backwards and It took me a while to realize it but Im friends with 2 of them but just to be nice and not get into more fights