Bye-bye cigarettes and boyfriend? Champix

Despite a bit of nausea in the morning when I didn't take Champix with food, I have not had too many bad side-effects, EXCEPT I have lost all tolerance for being the peace-maker in my relationship. Prior to Champix, if my boyfriend was in a scratchy mood, or said something insensitive, or acted in a selfish manner, I would take the time to explore my feelings, ask him questions, tell him how things effected me, and hopefully encourage him to reduce or cease those behaviours. 

Now? I just call him out on it and it starts a fight. Or I say nothing, walk out of the room and daydream about leaving him. Champix has made me less anxious about pleasing my partner and much more focussed on myself. I don't know yet if this is a good thing or a bad thing.