get rid of bad friends

i’m tired of being thought of as a package deal with this friend i have! i want to be my own person, i want to be original, and i feel like shes kind of controlling my life. shes disrespectful to me when we hang out. when she doesn’t have any friends, she steals mine and jokes about me with them as a way to become the alpha of that group and get everyone to like her. she always talks about herself and her problems. she doesn’t seem to care much about anyone else. whenever i try and get away from her, she comes back around. its like she thinks i can’t have my own friends. she uses me to get thorough to other people to become closer to those people. I AM TIRED OF BEING USED.