pathological liar in my life.

I have nowhere else to say this.. it’s been bothering me for so long but my best friend is a serious pathological liar and narcissist. He uses everyone around him for his own selfish gains like money and attention. There’s been multiple instances where i tried getting him the help he needs cause he was using his boyfriend so badly, and ignoring his being if he wasn’t doing this or that. After trying to do that he started targeting me, and won’t stop. I don’t know if i can handle as I am sensitive to pressure and he’s just my only friend and hope in this life.