im in a relationship with a heroin user we've been together for 4 years and it hurts me too much watching him take it he doesnt inject it i sometimes cry myself to sleep i have no one to talk about this i fell embrassed i want to leave him because i feel down and i gave up my friends for him and deep down i think he doesnt love me i've given him a week to stop and the wek will end tomorrow and he says he will stop next week but he said so many time and this time its gone too far please help me.