I started this at 4.5 but I think I'm bumping it to 5.
Premise is that the Queen Bee of a religious school, kissed three people, disappears the night of prom, and it's up to those three to find her.
This includes a lot of queer representation, and shows that your identity can evolve as you do (that's a minor plot point though).
The second half of the book is wildly different than the first half, but I don't mean that in a bad way.
Everything felt well put-together in this book.