Flipped

Flipped (2002) is a young adult novel by Wendelin Van Draanen. It is a stand-alone teen romance in a he-said she-said style with the two protagonists alternately presenting their perspective on a shared set of events. In the beginning, Juli falls hard for Bryce, or more accurately, for his blue eyes... Naturally, being 7, Bryce has no interest. However, as the novel progresses, both children grow up, and their emotions change drastically.