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.
**got summary from Goodreads
As far as I can say, Ms. Armentrout did it again!!! Her book on Daemon's brother Dawson and his brother's girlfriend Bethany really got me especially their end. By the time I finished the last chapter of the book I was in tears. My thoughts were on, "No~!!! Dawson...Bethany..." *tears*. I swear after reading this story cried at the ending. It's just so sad. I feel for Daemon in the ending especially. :(