Something fabulous

"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, too many novels at an impressionable age have caused her to grow up ... romantic. So romantic that a marriage of convenience will not do 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”...