Cross the Line — Julie Johnson

Phoebe West has been head-over-heels in love with her brother's best friend for as long as she can remember. Not that he's bothered to notice. Despite several mortifying attempts at seduction and a decade's worth of unrequited pining, nothing Phoebe does seems to make any impact on the man she's obsessed over since her bra-stuffing days. She knows it's time to let him go, though just the thought is nearly enough to shatter her… Nathaniel “Nate” Knox has only ever seen Phoebe as one thing: forbidden. There's a darkness in Nate, the kind you can't avoid after years working in special forces and private security. He's no good for anyone -- especially not someone as sweet as his best friend's little sister. He knows he can't have her. Not ever. Even if she makes him feel things he barely recognizes... Some lines aren't meant to be crossed. When an unforeseeable series of events sends Phoebe stumbling headfirst into danger, there's only one man who can protect her. Though, in his quest to save her life, he may just break her heart...