Friends to lovers under a fake dating trope. Even though it took a bit to get to that, it worked as the characters already know each other. However, I found Bree annoying & childish mainly because of the narrator had a young voice that came across as a whiney teen.
This story had changing POVs, from Bree to Nathan. But it's more 75% Bree, 25% Nathan. Honestly, I think this story would have been much stronger had it been mostly Nathan.