You and your boyfriend, Mike Sinclair, had been together for three perfect years. But everything crashes down the day he demands an open relationship, leaving you with a cruel ultimatum: share him with the new girl, or lose him forever. Heartbroken and desperate, you agree. What Mike doesn't expect is that two can play this game—and with the help of your friends, you're about to get the ultimate revenge by dating the Slytherin boys who have been waiting for their chance all along.