The term Abrosexual refers to an individual who is sexually fluid/has a fluid and/or rapidly changing sexuality that fluctuates between many different sexual orientations. These may vary, and may not be all sexualities. The changes in sexuality may be erratic or regular(days, months or years). These fluctuations tend to vary from person to person, as do the sexualities that they may fluctuate between.
For example, an abrosexually identifying person may identify as bisexual one day, and then completely asexual the next. Or this sexuality change could come about between a few hours, or even a couple of months or years. Abrosexuality is put under the term of asexual, though abrosexual people are most of the time, allosexual. Though they are capable of becoming asexual or gray-sexual for a time, because abrosexuals, as mentioned, are able to fluctuate between most currently known sexual orienations.
To come across someone who identifies as Abrosexual would be an extremely rare occurrence as it is a not well known term and there are very few people who identify as this. Abrosexuality is also considered to be fake in many cases, with many people on the internet often denying that identifying individuals preferences, towards who they are attracted to can change.
The term is not to be confused with Novosexuality, which is similar but also very different.