Hey, I'm the guy from the Steven Universe Forgotten Gem story, just wanna say that I'm glad you the way I made the Harem as I was kinda uncertain on if it would work or not. The reasoning I had was that Gems like Basalt, Lapis and Peridot don't know how relationship works so they don't know about mono and poly relationships.
It's like how kids think they can only have 1 single best friend but in reverse and that [SPOILER] Pearl will just have to deal with sharing Basalt.
Also, I am kinda getting tired of writting the Harem trope since I have to figure out how to balance it to give every love interest their moment so in my next stories, there will either be no love interest or just one......maybe two.