Lithflux, also known as akoiflux, is a term to describe someone who either experiences attraction and only sometimes desires for it to be reciprocated, or whose attraction fades once in a relationship, but may come and go.
The term is an expansion on lith-, which is feeling attraction but not desiring attraction to be reciprocated or the attraction completely fading when it is.
Similar terms include lithosexual and lithromantic.
History
Lithflux was coined by Tumblr user wavership, January 17th, 2019. The lithflux flag was created by the same user on the same date.
Resources
https://wavership.tumblr.com/post/182093554099/i-havent-seen-this-coined-yet-so (original post)
https://www.aromanticism.org/en/uncommon-and-newly-emerging-terms