A Lesson from the Past (S)

Aunt Betty is a charming old lady, who, having tasted the bitterness of disappointed love, does not wish to see others suffer in the same manner. She is full of sympathy for Margaret, her niece, who comes to her tearfully relating that the father of her fiancé refuses to sanction their engagement. By a strange coincidence, the father, a rich widower, proves to be the man that Aunt Betty was engaged to forty years ago, and for whose sake she has remained single all her life.