I have no problems dating someone who doesn't use drugs, who simply doesn't enjoy them or feel like the risks are worth it for what she gets from it.
However, the way I see it is - if someone thought my interest in computers was stupid and wanted me to change, then we're probably not compatible people since it's one of my interests and always has been, so a relationship would be a bad idea.
Yeah, that's a little bit different, the fact that you do other drugs. It's true if you really love someone, you should be able to give up anything and everything for them but on the other hand, if they love you they should be able to accept you completely for who you are, everything included.
As long as the person you are dating doesn't have something against weed, or drugs, then it shouldn't be a problem.
It depends if they just don't do them, or are against them.
My current partner doesn't do drugs because he just doesn't have the desire to - ethically, he has nothing against them, and he knows I do them, so our relationship isn't affected in the slightest by it.
If he actually had a problem with drug use morally though, that's a deal-breaker for me. How long have you been dating if you don't mind me asking?