Q: Also, how does a non-binary person define their sexual orientation? Is it similar to trans people, wherein gender identity is used as the basis? Since they don't identify with the gender binary, how does this work?
A: Sexual orientation and gender are separate concepts. This is something that is relatively easily understood within the contexts of cisgender identities. But how does sexual orientation “work” for genderqueer or trans-identified peeps?
Genderqueer sexual orientation works just like cisgender sexual orientation works. People are attracted to certain kinds of people; attracted to certain expressions of masculinity and femininity; attracted to certain physical manifestations of sex and gender (breasts, and/or hair, and/or penises, and/or etc.); and attracted to certain self-identities of gender as they pertain to relationship and societal roles.
Attraction is something that comes from within. There are a lot of theories on what drives attraction – or where it comes from.
Sexual orientation does not depend on gender. If you suddenly became a different gender, you would still be attracted to the same people, or you would no longer be you. Now, this is smudgy, because one could argue that if you became a different gender you would likely have a different mix of hormones floating around inside your hat rack, but we’re not going to go there.
What’s important is that I’m suggesting that attraction – truly, absolutely, distilled and rinsed – is about the other, and not about the you (or, for all the grammar nerds, it’s about the object, not the subject).
Conventional terms to describe sexual orientation (hetero-, homo-, and bisexual) don’t work well outside of the cisgender world. Many have argued that I shouldn’t use those terms at all in my gender article because they aren’t inclusive of genderqueer folks. While that’s true, the conventional (and non-genderqueer-inclusive) terms are more accessible to people who are new to these concepts.
New terms for expressing sexual orientation
Androsexual/Androphilic: attracted to males, men, and/or masculinity
Gynesexual/Gynephilic: attracted to females, women, and/or femininity
Skoliosexual: attracted to genderqueer and transsexual people and expressions (people who aren’t identified as cisgender)
Pansexual: attracted to all people, regardless of biological sex, gender identity, or expression
Asexual/Nonsexual: no sexual attraction, but often romantic or spiritual attractions exist
https://www.itspronouncedmetrosexual.com/2012/02/sexual-orientation-for-the-genderqueer/
Most (enbys n genderfluid/genderqueer) people also use the terms gay, lesbian, bisexual, pansexual, etc to define themselves. So it's a personal choice. There are a whole lot of other terminologies which are even more confusing do I'm not introducing it here, even I don't understand them all.
5