Obsidian by Jennifer L. Armentrout (Book 1)

STARTING OVER SUCKS

When Katy moves to West Virginia right before her senior year, she'd pretty much resigned herself to thick accents, dodgy internet access, and a whole lot of boring. . . until she spots her hot new neighbour.

BUT HE’S NOT WHAT  HE SEEMS

Daemon is infuriating. Arrogant. Stab-worthy. Alien. But when a stranger attacks Katy, and Daemon freezes time to save her, something. . . unexpected happens.

HE MARKS HER

Turns out Daemon and his sister have a galaxy of enemies, and Daemon's touch has Katy lit up like the Vegas Strip. The only way she’s getting out of this alive is by sticking close to Daemon until the alien mojo fades.

THAT’S IF SHE DOESN’T KILL HIM FIRST