. . .The same best friend actually tried sleeping with me one evening and I have proof. I was going to enlist a mutual friend to tell my ex gf about it so it ruins her friendship with her best friend and messes up the demographics of hanging out with the new BF.
How will my BPD ex respond knowing her best friend tried sleeping with her boyfriend? Will she paint her black? That's my goal.
I can understand that you are hurt, but vindictive actions are
NOT productive.
People who are serious about an on-going relationship with someone with BPD need to learn & exhibit
emotional intelligence.
Sounds like you have anger issues? Perhaps you like drama? This could be a good opportunity to look within and work on yourself. Focus on learning some emotionally intelligent communication skills that you can find on this website. If she discards the other guy, and gets back in touch with you, you will be better equipped to resume a relationship with her (if that is what you want).