Migawari no Tsuma

Willow gets a job as a nanny for Scott Galbraith, a widowed doctor who’s finding it difficult to raise his kids alone. As she begins to spend time with Scott and his family in his huge mansion, she gradually finds herself falling in love with him. She has hope that he will return her feelings, but instead he becomes distant toward her. Soon, Willow discovers there is someone else he’s meant to marry, so there’s no use hoping for things to be different. And Willow has a secret Scott must never find out about, either… Source: Harlequin