Welcome to SR.
A relationship with an addict or alcoholic is so much chaos and drama, I have to ask you something. The early stages of a relationship are where one determines if each person is compatable with the other, has shared values and goals. Why have you, at this crucial time, decided that having an heroin-addicted boyfriend made for a good match?
This is forward of me to suggest, but spare yourself the grief that awaits you down the road and leave this guy. Leave his addiction and any possible future recovery to him, because he's the only one who can do anything about it.