Fury (Fury #1) by Elizabeth Miles

Em loves the winter holidays. And, this year, things are really looking up: the guy she's been into for months has finally noticed her. But if she starts something with him, there's no turning back. Because he's going out with her best friend.

On the other side of town, Chase's home life is stressful and his social life's unravelling. But that's nothing compared to what's really haunting him. For Chase has done something cruel -- something the perfect guy he pretends to be would never do. And it's only a matter of time before he's exposed.

Em and Chase are about to find out that mistakes can be deadly. And three beautiful, mysterious girls are going to make them pay . . .