I've dated casual smokers and non-smokers
I'm a daily toker
it's been a source of indirect tension, nothing said outright but I've gotten "the look" plus plenty of sighs
*shrug*
I'm relatively young, childless, live alone
I'm gonna do wtf I want and includes smoking when I feel like it which is why I prefer smokers. Even with the "I don't but I don't mind if you do" crowd, I find myself worrying about if they smell like it too etc.
plus it enhances makeup sex after an argument by a hundred thousand trillion if you smoke the hash-it-out blunt and THEN fuck.