At what point is a jealous ex a dealbreaker?

About two months ago, I started seeing a really kind, caring guy who treats me very well. The only issue so far is his ex-girlfriend, who is also one of his closest friends. I've known this girl for a couple years (before I ever met him) and she's been consistently rude and malicious to me, despite great effort on my part to be friendly. She's confided to other people that she's jealous, but keeps attempting sabotage of our relationship through manipulation and lies. I've tried to discuss her issue with me calmly but reacts very angrily and denies everything. My new guy admits that she's unstable and mean (not just to me, but most people, including him), but it makes me question his character that he would keep someone so toxic in his life. I don't think I'd be comfortable pursuing a long-term relationship if I'm going to have to deal with her drama all the time. What should I do?
By melatonin 7 years ago :: Bitter Ex
  • Rafael Morales Toia
    I have extensive training and expertise in clinical, counseling, transpersonal/integral psychology and coaching. I provide support to those willing to work on themselves… $2.75/minute
  • Robert Betancourt
    MA, Professional Counseling,Therapist
    Emotional Healing-25+ years experience in helping people find solutions that work. "one of the best therapists here" $2.49/minute
  • View More Experts