According to the Demisexuality Resource Center, "Some demisexuals consider demisexuality to be under the gray asexual umbrella because it involves feeling sexual attraction in specific circumstances. Gray asexuality, also known as "gray-A", is a catch-all term used for anything between sexual and asexual that does not fit. How is gray asexuality different from demisexuality?
Biromantic demisexuals are people who need to be strongly emotionally and romantically connected to someone to feel sexual attraction, regardless of gender. Similar to panromantic but more geared towards a spectrum of genders instead of sexual orientations, individuals who are biromantic are romantically, but not necessarily sexually attracted to more than one gender identity. Being panromantic, these folks are attracted to anyone, from any orientation or gender identity and typically tend to feel that their partner's gender does little to define their relationship. People who identify as panoramic demisexual have to develop a strong friendship with a romantic interest in order to view them as such. And while the experience is different for everyone, in today's day in age, it can sometimes make finding someone all the more challenging. If you identify as demisexual, it's extremely difficult to feel attracted to someone without being friends first. But it goes beyond just needing to like a person before you feel ready to have sex. That may not sound that odd, and many demisexual people probably don't seem that different than anyone who is a little skittish about sex. The concept is a specific, slightly more sexually charged variation of asexuality-or the condition in which someone feels no desire for sex whatsoever-and is predicated on the fact that an intense emotional bond is needed as a precursor to sexual attraction or stimulation.