One True Love — Alice Holden

With only a meager competence and no prospects, Kate Hamilton must make her own way in life as a governess. Her good friend, veterinarian Daniel Nealy, offers to help her acquire a position with a local wealthy family, where she meets the irrepressible Lord Percy. But despite the dashing lord's amorous attentions, it's upstanding, honorable Daniel who makes Kate yearn to say "I do."