My Immortal by Erin McCarthy

Synopsis
In the late eighteenth century, plantation owner Damien du Bourg struck an unholy bargain with a fallen angel: an eternity of inspiring lust in others for the gift of immortality. But when Marley Turner stumbles upon Damien’s plantation searching for her missing sister, for the first time in two hundred years it’s Damien who can’t resist the lure of a woman. But his past sins aren’t so easily forgotten-or forgiven.