ELI5: Explain Like I'm 5

Heterosexual–homosexual continuum

Okay kiddo, here's how it works. You know how some people like boys and some people like girls? Well, some people actually like both boys and girls, and some people don't like either one. It's like a big line with all the different kinds of people's feelings about boys and girls. Some people are way at one end and only like boys or only like girls, and some people are more in the middle and like both kind of equally. And then there are some people who feel differently depending on the day or the person they're with. It's okay for everyone to feel however they feel, and we should respect and accept them no matter what.