Abrosexual? Is this real or just conceptual?

[AgnosticBoy]

This concept has me questioning if sexuality is as fixed and linear as we think it is..

Abrosexuality is having different levels of sexual or romantic attractions throughout your life. A person who is abrosexual may also have changes in their sexual orientation over time. For example, a person who is abrosexual might be sexually attracted to men at one point, then not sexually attracted to anyone weeks later. Someone who is abrosexual may have periods of different intensities of attraction.

Abrosexuality is different from pansexuality because of its changing nature. A person who is abrosexual may, at times, be pansexual, but at other times they may be heterosexual or asexual. Their sexual orientation is in flux. People who are pansexual are attracted to all people no matter their gender or sexuality.

Source: https://www.webmd.com/sex/what-is-abrosexual

Maybe it is fixed for most. But some times I wonder if things are just made up just to create a different class for people to fit into. Or perhaps this fits with people who luv to experiment.