Shadows (Lux, #0.5) by Jennifer L. Armentrout

The last thing Dawson Black expected was Bethany Williams. As a Luxen, an alien life form on Earth, human girls are…well, fun. But since the Luxen have to keep their true identities a secret, falling for one would be insane.

Dangerous. Tempting. Undeniable.

Bethany can’t deny the immediate connection between her and Dawson. And even though boys aren’t a complication she wants, she can’t stay away from him. Still, whenever they lock eyes, she’s drawn in.

Captivated. Lured. Loved.

Dawson is keeping a secret that will change her existence...and put her life in jeopardy. But even he can’t stop risking everything for one human girl. Or from a fate that is as unavoidable as love itself.