Obsidian

Camilla Kensington is the girl in the gilded cage. With two overprotective twin brothers and a past she can't quite remember, her life has always been about being "protected." and being "safe." But the secrets in the Kensington house are starting to leak, and Mila is slowly realizing that her family might be the most dangerous people she knows.
One night, the image of her life is ruined forever, and she has nowhere to run. No friends, no family, and no plan.

Except for Nathaniel Ashcroft.
He's the guy she's supposed to hate. Her older brothers best friend. The monster from her dreams who watches her a little too closely. He's cold, he's arrogant, and he's her only way out.
Staying in his house means dealing with his rules, his attitude, and the way he looks at her when he thinks she isn't watching. But as her old nightmares return and a new danger closes in, Mila has to figure out if Nate is actually the devil or the only person who can keep her from breaking for good.