My boyfriend is 23 and he smokes cigarettes and weed. Right now I don't really mind that he smokes, but I don't want him smoking anything when we have kids. We've only been together for about 2 months so I don't really feel like I have a place to tell him to that I want him to try and stop, but I really want him to at least start trying to stop pretty soon. Any advice on how to tell him or how to casually bring it up in conversation would be helpful.