Affinity: The Soul Keeper

Seventeen year old Elspeth Brighton never thought her vivid nightmares of Hell would be the beginning of a spiral of terrifying events that would change her life forever.
When the mysterious and seductive Seth Lor suddenly introduces himself, her whole world is turned upside down. He knows everything about her, things she didn't even know about herself, secrets that if discovered, will put her life in danger. Seth is the only one who can protect her now; not only from herself, but from the Nephilim who have hunted her since the day she was born.
When Seth finally reveals his own dark enigma, Elspeth's fear and uncertainty of being with Seth transforms into an impossible love with one forbidden kiss, and as violent passions arise, it is one fatal mistake that sends her whole world unraveling into a chaos of secrets, betrayal, and a destiny cut short as her life falls into a constant struggle, not only to survive the danger that lurks around every corner, but to protect the people she loves from the eternal fire that awaits them should she fail her mission.