I'm too stupid, aromantic, and autistic to recognize flirting resulting in the semi frequent situations where other people think I'm flirting but no I'm entirely serious about what I'm talking about with no ulterior motives.

There was at least one situation where I was info bitching about the lack of Bronze Age fantasy to some girl where she interrupted me to inform me she had no interest in sleeping with me, I informed her that I didn't care and just wanted to talk about the Bronze age and Neolithic since my friends banned me from that subject for a month. Turns out she was in the field of Neolithic studies focused primarily on late neolithic Scandinavia and the possible merger of paleo Europeans and Indo-Europeans in the region, we had a 2 hour discussion on the Neolithic plague hypothesis.