Found out my SO is using Heroin. I confronted him about it but he insists he isn't an addict I recently noticed that my boyfriend has been acting strangely and upon further investigation i found that he has been doing heroin. He has been snorting the stuff for a few weeks and i know that he has done it before we started dating. I confronted him about it and he is insistent that he is not an addict and that he just likes to do it no and then. He also has a history of abusing other pain pills like vicodin, as far as i know. Just looking for some advice, I've never dealt with this before.  thanks.