What made you realize you were gay?

I (17M) know I like girls, although the only girl who’s shown that same affection moved away just days after we realized we both liked each other 😔. I sometimes jokingly act gay and flirt a lot with my guy friends, sometimes so much that they can’t tell if I’m joking or not. Honestly I’m not sure how I’d feel about being in a relationship with another guy. I’ve never dated a guy before, so I can’t say for sure that I wouldn’t like to date one.

I wanna understand what made you realize you were gay or bi, because I’m not really sure if I’m straight or bi.