When someone claims to be homosexual, but in the next week they’re dating someone of the opposite gender.
When someone claims to be heterosexual, but in the next week they say that they’re tired of dating the opposite sex because of reasons, and then they date someone of the same gender.
When someone claims to be bisexual but then says it’s gross to date someone of the same gender. (THIS SERIOUSLY HAPPENS AND I DON’T FUCKING KNOW WHY).
IF YOU DON’T KNOW YOUR FREAKING SEXUALITY, JUST SAY YOU’RE UNSURE.
This usually happens to girls. At least guys know what they’re doing most of the time.