YA - The Break-Up Artist by Philip Siegel

  The Break-Up Artist is the anti-romance.  Becca is so tired of all of the brainwashed couples at her school; so tired of hearing all of the girls start their sentences with "my boyfriend", and she's tired of being single shamed.   Her ex-best friend Huxley dumped her as soon as she started dating Steve - now they're the high school's star couple.  To make things worse, her new best friend Val is sinking to all-time lows to land the "sensitive artist" Ezra.  But what no one knows - Becca is the Break-Up Artist.  For a $100 PayPal payment Becca will plant evidence, start rumors, scheme and sabotage until the couples in question are no longer an item.
  The trouble begins when Becca is contacted by a grown man (her clients are usually the jilted friends of one member of the couple) to break-up Huxley and Steve.  Becca has to dig deep into her bag of tricks to pull this one off, and in the process she risks being outed as The Break-Up Artist.
Philip Siegel does a great job of keeping this from being a cliche.  Our main character Becca is real and flawed.  She's been hurt and in turn has no problem hurting others (though she doesn't see it that way).  Bottom line - this book is a fun way to spend the day - your classic "beach read".
  **I was given an advance copy of this title through Netgalley for review.  The publication date is April 29, 2014.