Have a gf and she has a bf. She's been modertaly flirty (laughing at my jokes, helps me, strong eye contact, says sorry when her hair brushes my desk or any noise she makes during class) and we get along pretty well. She know's I have a gf. (We all have the same class together). Now that the semester is over, I hit her up to talk about grades etc and told her she owes me lunch for helping her with some class work the other day (jokingly of course). She turns around and says she has a bf and that I have a gf and she doesn't want any trouble. I responded by saying "lmao its just pizza what the hell did you think was going to happen??". She deflected and said "nothing" but she just wanted to be upfront about not starting drama. She apologized for making it weird and in case she offended me. I told her everything's cool and she didn't offend me, thanked her for being upfront and changed the subject.

Someone explain, is she already thinking something might happen? She's really nothing more than a cute friend to me and I've been very nonchalant with her mostly joking about the pizza but I wanted to see where it would go (looking to possibly hangout with her as dread on my gf).