Mischief by Moonlight (Mischief #3)

With the night so full of romance...

Colin Pearce, the Earl of Ivorwood, never dreamed he'd desire another man's fiancée, but when his best friend goes off to war and asks Colin to look after the bewitching Josie Cardworthy, he falls under her sparkling spell.

Who can resist mischief?

Josie can't wait for the return of her long-absent fiancé. If only her beloved sister might find someone, too... someone like the handsome, reserved Colin. A gypsy's love potion gives Josie the chance to matchmake, but the wild results reveal her own growing passion for the earl. And though fate offers them a chance, a steely honor may force him to reject what her reckless heart is offering...