-1. How would/do you feel about your boyfriend smoking weed at most once a week?
If my boyfriend started smoking again, I would break up with him. He had a drug problem previously, and he understands that I can't be his girlfriend if he gets high. I could be his friend, but nothing more.
-2. How would/do you feel if your boyfriend was bisexual?
I wouldn't have a problem with him being bisexual.