Special:Badtitle/NS844:3ea3bf9a65e6f8698ecfa601dc4ce483

That sounds exactly like Fraysexual! (Link: Fraysexual)

There's also Coeosexual (Link: Coeosexual) Which is kinda like 'Love at First Sight', and does say that the feelings can be fleeting. It's not a requirement that the feelings go away (they can though) which is what sets it apart from Fraysexual. All depends on the individual, really.

There's even Genusexual, (Link: https://sexuality.fandom.com/wiki/Genusexual), which is where one switches between Demisexual and Coeosexual. Which in my opinion is an Aceflux and/or GrayAce subtype. (Which doesn't make it any less valid at all, of course.)