your situation sounds a lot like mine. my boyfriend of almost 2 years has been smoking it before we met. it got to the point where he had been stealing money from my mums credit card and in 3 months had spent £400 on weed and cigarettes and things. i made him go and get help from the drug and alcohol services but i dont think he stuck that out very long. i found out at the weekend he is smoking on and off and hasn’t found giving up as easy as i would have hoped. if your boyfriend doesn’t want to stop then he wont, you just have to hope it doesn’t get too bad. my boyfriend has mental health issues also, psychosis, from the weed. according to him i dont understand his addiction which again isnt going to help things. i can imagine you feel the same. i too would love for the same answers and wish i had more for you x