I have been with my boyfriend for 18 months. I knew from the beginning that he had a long history of drug use but he told me he was clean. Well here lately he's been hanging out with some old friends smoking pot. I am adamently against this. He gives me the argument about how it's harmless, etc. etc. but really it goes against my values. He wants me to accept him for who he is (someone who at age 30 smokes pot and sees nothing wrong with it) or break up. We've decided for now to take 2 weeks off from each other. But what should I do?