Shannon McKenna 
TALL DARK & OFF_MEN OF MAD3 EB [EPUB ebook] 

When it comes to his best friend’s sister, he’s tempted to be much more than her protector…Security expert Zack Austin is more than up for the task of protecting Ava Maddox. After all, she’s like family. But dealing with the dynamic beauty requires every ounce of patience…and sexual control. They’ve been denying their forbidden feelings for too long and soon passion erupts. Zack’s willing to face her overprotective family’s wrath, but will trouble explode in his face?