Mated to a vampire

Tom Rivera, a playboy. He plays with any girl he sees, while some took their lives, some where found in the psychiatric hospital, and some were lucky enough to leave the school, and no one said anything about it. He's is the CEO of a popular cult group known as the VAMPS. They murder and discard whosoever that gets in their way. What happens when Alexandra Diego, the pure and innocent girl moved to town? Will the VAMPS kill her? Or is her heart gonna be broken by Tom Rivera?