Abrosexual refers to an individual who's sexuality is changing or fluid. (For example, someone could be gay one day, then be asexual the next, the polysexual the next.) While it is possible (and even common) for a person's sexual identity to shift or change in some way throughout their life, an abrosexual person's sexuality may change more frequently, over the course of hours, days, months, or years. Because of their inconsistant attraction, some abrosexual people may not feel compelled to seek out a relationship.
The timing of the fluctuations is different for every person, for some the fluctuations may be erratic and for others they may be regular. The sexualities that they may fluctuate between also vary from person to person. Some abrosexual people may be fluid between all sexualities, other may be fluid between a few.
The romantic equivalent of abrosexual is abroromantic (or abromantic).
Abrosexuality is sometimes considered part of the asexual spectrum, as an abrosexual person might sometimes be ace-spec, although they might be most commonly allosexual.
Flag
The creator of the abrosexual flag is unknown, along with it's meeting.
History
The history of the term and flag abrosexual can date back to 2013 on DeviantArt, gaining traction on Tumblr in 2016.
Etymology
The term "abrosexual" derives from the Greek word for delicate and graceful.