In this queer polyamorous m/f romance novella, two metamours realize they have crushes on each other while planning their shared partner's birthday party together. Ernest, a Jewish autistic demiromantic queer fat trans man submissive, and Nora, a Jewish disabled queer fat femme cis woman switch, have to contend with an age gap, a desire not to mess up their lovely polyamorous dynamic as metamours, the fact that Ernest has never been attracted to a cis person before, and the reality that they are romantically attracted to each other, all while planning their dominant's birthday party and trying to do a really good job.
Haha I knew I recognized that description. It was basically lifted from the plot synopsis of this accursed thing: https://www.amazon.com/Their-Troublesome-Crush-Kink-Showtunes-ebook/dp/B07PW8CYBR?ref=d6k_applink_bb_dls&dplnkId=dcf5298b-bfd5-440a-a73d-9969c4523b5f