His Custody by Tamsen Parker

He needs to be a better man for her sake, but she makes him want to be so bad… Keyne O’Connell leads a charmed life. She has a caring family and a terrific boyfriend. Her senior year is about to begin, and her future looks bright. But one dark summer night robs her of everyone she loves, thrusting her into the care of her boyfriend’s intimidating, much older brother. Dark and brooding, Jasper Andersson is not a good man.

His business dealings are barely legal. He’s a womanizer and a casual drug user. He has no interest in becoming Keyne’s guardian, although given her limited options, he doesn’t have much of a choice. He knows he must protect her at whatever the cost. But living in close quarters soon stirs up feelings inside them both that are far from platonic. Keyne needs a firm hand to keep her in line, but what she desires could lead Jasper into trouble…