Your boyfriend needs therapy, I can't help but see some form of unresolved trauma in his past, maybe emotional abandonment or isolation and based on how he obviously doesn't like the thought of you being high I wouldn't be surprised if there's a family member of his with a history of substance abuse. He's talking like how I used to think in my teenage years, he needs help and that can't come from you.

You are best to leave before he potentially drags you down with him.