What is the author's style in Flipped by Wendelin Van Draanen?

Since the story in "Flipped" is told from the perspective of its two main characters, Bryce and Juli, the tone and style of writing changes accordingly. Bryce, who is unsure of himself and overwhelmed by the more confident and aggressive Juli, demonstrates that lack of self-esteem in his thoughts and actions. While he complains about Juli, the subtext tells the reader that he is intrigued with the girl and recognizes that she has admirable traits.