Everlasting by Kathleen E. Woodiwiss

Once, Abrielle was a privileged daughter coveted for her bearing, her breeding, her wit, and her beauty. But when her stepfather is denied his rightful title and the wealth that accompanies it, Abrielle finds herself suddenly disgraced. Only one man would still have her: the oafish and grotesque Desmond de Marlé. To rescue her once-proud family’s honor, Abrielle must sacrifice her virtue to this scoundrel she fears and detests . . . even as she yearns for another lover.
Dashing, handsome, tall, and kind, Raven Seabern is quite unlike any man Abrielle has ever encountered. But their love can never be, for Abrielle is betrothed to a monster. And the well-being of everyone she cares for demands that she honor her promise. Still, Raven knows he has found the true one and must never let her go—though secrets, deceptions, dishonor, and unimaginable peril will surely be their fate if they follow the dictates of their hearts.