If you like All American Girl by Meg Cabot

Flipped by Wendelin Van Draanen.
In alternating chapters, two teenagers describe how their feelings about themselves, each other, and their families have changed over the years.

Once Upon a Marigold by Jean Ferris.
A young man with a mysterious past and a penchant for inventing things leaves the troll who raised him, meets an unhappy princess he has loved from afar, and discovers a plot against her and her father.

How My Private, Personal Journal Became a Best Seller
by Julia DeVillers.
A teen girl accidentally turns in a private story from her journal
instead of an English assignment and becomes a best-selling author
almost overnight.