Someday my duke will come - Christina Britton

A fake engagement becomes the real thing in this Regency romance from the author who Publishers Weekly calls "irresistible."

Lady Clara Ashford's world changed fifteen years ago at the hands of a rogue who took her innocence. Determined never to give into temptation again, she settles into a life as caregiver for her family. With her younger sister recently engaged and about to embark on a life of her own, Clara feels adrift and without purpose---until Quincy, the new Duke of Reigate, arrives on her doorstep in need of a fake fiance.

When Quincy Nesbitt unexpectedly inherits a dukedom, he's determined to do his best by the title. One thing he won't do? Marry a woman he's never met just because she was engaged to his older brother. So he enlists Lady Clara's help, since he can't marry another when he's engaged to her. But as they pretend for the ton, Quincy finds himself falling for real. Now he just has to convince Lady Clara to take a chance on him.