There's nothing like teaming up to investigate your mother's shady new boyfriend to make you see your best friend in a whole new light . . .

Jenna Greene has been very clear with her boyfriend: She is not ready for marriage. Too bad he didn't listen. Turns out a rejected proposal is a sure way to lose a boyfriend—and a job. Because, yes, he'd also been her boss. But it seems the firing has come at the perfect time. Back on Chincoteague Island, Virginia, Jenna's widowed mother has returned from a cruise—with a new boyfriend in tow. Something isn't right, and Jenna decides to return home to find out what's going on.

Tyson Parker has a pretty great life on Chincoteague. He's gainfully employed at his parents' bed and breakfast—in the very home where he grew up with his three brothers, right across the street from his best friend, Jenna. He loves volunteering for the island's illustrious fire company and being one of the saltwater cowboys who cares for Chincoteague's wild ponies. If only he could've skipped the whole part where he'd married a two-timing woman. Still, he's elated to have his best friend back when Jenna returns to the island, even if it is only temporary. And he's happy to help her figure out what her mom's suspicious new beau might be up to. But soon his feelings for Jenna begin to shift into. . . something different.

Jenna expected to enjoy visiting her mom, Tyson, and his whole family. She'd expected to feel closer to her deceased father on the island where the foal they'd named years ago now roams the wild salt marshes of Assateague like its ancestors have for hundreds of years. What she didn't expect was for her feelings for her best friend to change. But she's always sworn she'd never date a firefighter. Plus, Tyson is fresh off a betrayal. And also, there's that teensy commitment problem she seems to have. Would she even have the courage to finally give her heart away? And should they really risk their beautiful friendship in the hopes they could someday be something more?