Valentine Layton, the Duke of Malvern, has twin problems: literally. It was always his father’s hope that Valentine would marry Miss Arabella Tarleton. But, unfortunately, a marriage of convenience will not do for her and after Valentine’s proposal she flees into the night determined never to set eyes on him again. Arabella’s twin brother, Mr. Bonaventure “Bonny” Tarleton, fully expects Valentine to ride out after Arabella and prove to her that he’s not a cold-hearted cad. Despite copious misgivings, Valentine finds himself on a pell-mell chase to Dover with Bonny by his side. Bonny is unreasonable, overdramatic, annoying, and … beautiful? And being with him makes Valentine question everything he thought he knew. About himself. About love. About which Tarleton he should be pursuing.