Just like lesbian, gay, and bisexual, demisexual is also a sexual identity. A demisexual is defined as a person who does not experience sexual attraction unless they have a strong emotional connection (such as a romantic relationship or deep friendship). Demisexuality is not a choice, it is an innate orientation. It falls under the asexuality spectrum, but this person may not identify as ace because they still experience sexual attraction, just not right away.
At first glance, at least for me, it seemed like demisexual seemed like a common thing for most people. Then, however, we think of ourselves and realize that many people are hormonal, sexual beings, who don’t need this emotional connection. Therefore, not everyone is demisexual, just like not everyone identifies as the other sexualities.
The cool thing about demisexuality it is not gender specific. This means someone can identify as demisexual as well as queer, lesbian, gay, or even heterosexual.
This label just lets you shape your identity even further, which I think is pretty rad.