I theorize that in Steven Universe, Lars is trans and Sadie is bisexual
Because think about it
In the episode where Stevonnie appears and goes to the big donut, Sadie is totally gushing over her. And then she also loves Lars. I think it makes sense.
And Lars, he could be on testosterone. I mean listen to his voice. And I think it's likely that he has had top surgery since his parents are 1. Rich and 2. Very supportive and care about Lars from what we've seen from the episode featuring his parents.I want this to be real in the show
Maybe the Sadie part would be reference considering the show is about LGBT presented in "subtle" ways.