Love, Inc by Yvonne Collins, Teen Pick from Kathryn T.
This book was so cute! Think 'John Tucker Must Die' with a real main character and an actual storyline.
Zahra is furious with her parents when they send her to a therapy group to help her get over their recent seperation. But, she changes her tune when she meets Syd and Kali, to other girls at the group. They wouldn't have been friends at all, if they hadn't realized that they were all dating the same guy, at the same time. The revenge scheme they plan is so effective that they have other kids running to them asking for advice or help on their love life, love inc. is born.
This coming of age tale is funny, charming and very satisfying.