Smoking risk.

Usually I don't have and issue with smokers but my boyfriend smokes every weekend with his "friends" and it is starting to irk me. I'm scared that being in his altered state of mind, he'll say or do something completely stupid. I'm scared he'll blurt out something that'll build up potential to ruin our relationship. I don't know. Smoking has never been an interest for me but still, the fear is there.