Audrey, Uma, and Harry please!
First of all, I feel like I should mention how thankful I am that I was lucky enough to be a teenager with a pretty good concept of my sexuality when Descendants 3 came out, because I don't think I would have been able to handle seeing Audrey, Uma, and Harry on the screen at a younger age without having a total sexual identity crisis.
Now that that's out of the way, I like to imagine that Uma and Harry end up becoming pretty close friends with Audrey. The pair may hold some resentment for the princess at the start, but they would warm up to her faster than other AK's once they learn her full backstory, one they find suprisingly relatable.
("You were screwed over by Mal, was treated like a villain for seeking justice, and you have a mother with unreasonably high expectations?" Uma asked, sounding utterly gobsmacked.
"Yeah," Audrey replied, chuckling dryly. "I sound like I'm making it up, right?"
Harry grins toothily, dangling his arm around Audrey's shoulders as Uma allows a small smile to form on her face. "I've got a feeling that we're gonna get alone just fine.")
Audrey and Uma are able to act mature but still comfortable in eachother's presence. They can discuss any topics together without feeling embarrassed or awkward, without having to hide their views to appeal to the other person.
Harry, on the other hand, brings out a more childish side of Audrey. Making the princess crack up in the middle of class over something stupid and not very "princess-like" is one of his favorite things.