Long story short, I was in my first relationship with a girl, and she happened to be BPD. Or atleast I am 99% sure she is. We were together for 4 months, and I was a complete newb and beta, and she ended up cheating on me twice with her ex. Things ended, and she came back and I accepted like an idiot and then after a month decided that she wanted to stay friends because her feelings for ex was resurfacing and I said no and ended things. Then she came back a month later and apologized and I accepted her AGAIN and use dread game and it was working until another guy approached her and she ended up ending things with me and getting with him. Then that ended after a month and she hit me up again but before we could "hook up" another guy already approached her and now she is dating him again. Now I am not going to lie, I do not want this girl back, it just pisses me off when she is with someone else. I dont know why I am possessive but at the same time I dont want her. Now I need some advice on what I should do. She is posting pics of her and her bf on IG and stuff and I dont wanna give her satisfaction of unfollowing her and letting her know I still care, because I dont i am just possessive as hell. But I was thinking maybe I should cut her off to trigger her abandonment issues, and as messed up as it is I want her to feel pain and miss me lol. What should I do?