From Just Listen by Sarah Dessen:
"Annabel Greene is the girl who has everything. At least that's who she plays in the commercial for Kopf's Department Store: top student, popular cheerleader, dazzling prom queen surrounded by friends. In real life, though, Annabel is the girl who has nothing: no best friend since her friendship with mean-but-exciting Sophie ended with malicious rumors flying, no peace at home while her older sister's eating disorder preoccupies the family, and no ability to tell anyone what's on her mind.

"And then she meets Owen Armstrong - intense, obsessed with music, and determined to always tell the truth, no matter what the consequences.

"Can a girl who hates confrontation find a way to connect with a guy who thrives on it? And can Annabel find the courage to tell what really happened the night she and Sophie stopped being friends?"