one way around this would be not to be around him when he are with his friends. you might want to tell him that you love his friends but when he is with them, he turns into a totally different person that it's not who you love him for. everyone is usually different when they are around their friends, but he should also be aware of your concerns. my ex told me once that i she didn't like it when i used to drink a lot and in turn, i think i might have cut down...haha only a little if anything, but if he cares, then it will affect him if you tell him straight foward. raverboy
...this is just my perspective on the situation...