I Don't feel Supportive...

My man and I have been arguing these pass days for something really stupid. I am a smoker I smoke weed and my boyfriend smoke Cigarettes. We been together for 6 months already and he met me as a big pothead, I am not as much as a big pothead any more but will still smoke once in a while. He really hasn't been a big fan of me smoking he wants me to stop completely.. While then again I let him do what ever he wants to do cause of course I'm gonna support him. Even doe I smoke it doesn't really stop me from doing what I gotta do Like school, work, and stuff around the house , At time I just wanna relax and smoke. I really don't feel like he is supporting me for it and supporting me for me he thinks I can do better without it... I just don't know what to do . I just don't wanna argue over something silly that can be avoid.