He's her best friend, her closest confidant—and the one man she can never have.

Mia Chadwick has spent years convincing everyone, including Ben—her best friend and life-long neighbor—that she's perfectly content to remain unmarried. But secretly, she's loved him for as long as she can remember. Hosting a house party was the last thing she wanted to do. And it only gets worse once the guests arrive. When one of Ben's friends sets his sights on her, Mia finds herself caught in a whirlwind of flirtation, jealousy, and long-buried feelings she's desperate to hide.

He's about to lose the one thing he never realized he wanted.

Benjamin Cavendish, the Marquess of Berwick-on-Tweed, knows Mia better than anyone. He's questioned her declaration that she would never marry but never her place at his side as her best friend. When his charming friend, Cort, seems determined to win Mia's favor, Ben is forced to confront the truth: he doesn't want Mia to end up with anyone but him. Suddenly, their friendship is unpredictable, and Ben realizes he might be too late to claim the woman he's loved all along.

As tensions rise and feelings simmer during two weeks of games, intrigue, and stolen moments, Ben and Mia must decide whether risking their friendship is worth a chance at happiness. But with misunderstandings piling up and the end of the house party drawing near, they'll have to summon their courage—or risk losing each other for good.