As for sexuality.. I like TornZero's response with "To me, "sexuality" is the broad term that refers to sexual orientation, gender identity, and romantic orientation."
However, I would even go so far as to say someone's identity.. and not just their gender identity. Sex is natural for humans and therefore that's why/ how I can see it is part of their identity.
I guess to better understand what I mean.. take Samantha from Sex in the City for example; her sexuality plays a huge role in her character.. and although sexuality doesn't necessarily has to be public, I feel it still affects who you are as a person :3
Just my thoughts <3
I don't know. That's just what she says happened.