only bug I'm seeing there would be people saying you and bull are still in a relationship.
From what I understand, as soon as you've "broken off" a relationship with any party member, you can not romance them again. So your friend ending the romance in that conversation permanently locked you out of being able to continue a romance with bull.
I think it is weird that people are still mentioning you and bull as a pair when you're with dorian. Maybe they're still all in shock after culled, josie, and cass walked in on your "fun" and haven't realized it ended. :P