its discovered by like research and current knowledge about how you feel about gender identity (ies) or sexual orientation(s), Iike how i realized im genderfluid bc i feel feminine one day, the next masculine, but I also didn't feel fully connected to feminity, neither to masculinity, and so I wanted to see if there was mix of the two identities, which there was, and so now I realize what i actually am. Its kind of hard to figure out what you are anyways because theres so many orientations/identities that it's hard to realize what you truly think you are. I might not even be demifluid/transmasc anyways, it could be something totally different.