Author: E. Lockhart
Publisher: Hot Key Books
A brief synopsis; (Via Goodreads)
Fifteen-year-old Frankie Landau-Banks has grown up a lot over the summer. She's no longer daddy's little girl - and almost immediately after starting the new semester at her highly prestigious school, she bags goofy-but-gorgeous Matthew Livingston as her boyfriend. They get along great but then Frankie discovers that Matthew is a member of a boys-only secret society that specialise in 'hilarious' pranks. Which hardly seems fair... especially when Frankie knows she's smarter than any of its members. And to prove this, she's going to teach them a lesson.
Impersonating lead member Alpha by using a fake email account is surprisingly easy, and soon Frankie is setting the boys up with all sorts of ridiculous schemes and sending them on wild goose chase after wild goose chase. Alpha's not prepared to lose face and admit it's not him sending the emails - but the fun can't last forever, and soon Frankie will have to choose between what she think she wants, and the reputation she deserves.