Polarsexual is term for people who switch between strongly feeling sexual attraction to being completely asexual and/or sex repulsed, with no in between state.
History
The term was coined by an unknown on or before July fourth of 2016.
Flag
The flag was coined on or before July fourth of 2016 by Mod Hermy on Tumblr user pride-color-schemes account.
Resources
https://pride-color-schemes.tumblr.com/post/146926040665/polar