Friend has been talking shit about me to her boyfriend, what should I do?

I’ve just found out that my “best friend” had been talking shit about me to her boyfriend, he had been rude to me and hated me all this time and I always wondered why. But I’ve just found out that this is the reason. She also kept stirring the pot to make him HATE me. I never wanted her boyfriend I wouldn’t do that to my friends. Should I dump her?
Friend has been talking shit about me to her boyfriend, what should I do?
Post Opinion