My mentally ill ex is scaring me

I regret getting involved with this guy. I'm so traumatized from his destructive and risky behaviour, I've broke up with him and now he's trying to ruin my life

He's an addict - he also had PTSD and self medicated. I've tried to be understanding and empathetic. He has a history of going on week long benders, overdoses and being hospitalised.

Our relationship was going so well, until he overdosed on edibles, gave himself a psychotic episode. He got lifted by the police and they called me because his sister was on holiday. I had to go one month without seeing him and it was so scary, I went to the hospital and visited him because I had hope that he would get better. I was so wrong. He relapsed a month after he was discharged, ghosted me for two months, acted cold and selfish when I got upset about it. He hid his relapse from me as well. The relapses aren't the worst, it's the way he would ghost me for weeks and then pop up like everything's okay

I drink and use drugs occasionally which he would use against me. He thinks he can lecture me on my habits when he's constantly endangering himself, especially when I told him I haven't taken coke in months. He judges me for taking coke when he's overdosed on drugs and has a tendency to binge drink. I have never done any of these things.

He threatened to tell my parents about taking coke because I was giving off "bad vibes". Then he backed out and apologized.

I've tried telling him that I don't judge him for drinking alcohol and taking drugs, I'm not trying to act like I'm better than him and that I'm just worried that he'll trigger his schizophrenia. I was willing to quit to help him stay sober because I loved him so much.

I tried to be amiable with him, tried to be reasonable and nice. Only for him to block me out of the blue a week ago. Now he's told my parents about me taking coke. I don't know what to do now. He's apart of an organization that frowns upon taking drugs, funny enough - he has beaten up drug dealers. He told them my personal details.

I don't know what to do anymore. I wanted the best for him, but now my compassion is gone. I want to scream at him for causing me so much chaos, for being a projecting hypocrite and meddling with my life AFTER I BROKE UP WITH HIM.

He messaged my mum, telling me that he was doing out of concern, not spite. Oh yeah, that's why he deliberately blocked me. This man has ruined my life, I thought he was a sweet man underneath it all. I really need a therapist. I thought he loved me. I feel so stupid for getting involved with him, I already have trauma from an emotionally abusive relationship and he knew it. I don't think I'll ever be okay again. I feel sorry for his family.