(Can be interpreted as polyamorous but doesn’t have to be. Can be interpreted as pre- and/ or post-relationship.)
Character A: Wait, hold up. Did we… did everyone of us fuck Character B at one point or another?
Character C, nonchalant, slightly bored: Yup.
Character D, shrugs: Precisely what happened.
Character A: Should I feel weird about this?
Character D: I mean… I fucked Character B before I even met either of you. I’m not going to feel bad about it either way.
Character C, snorts: In all fairness, we did have a threesome with Character B. Like, after we sorted our situation out.
Character A: You what now?!