I Married an Angel (1942)

Anna Zador (Jeanette MacDonald) has been in love with Count Willie Palaffi (Nelson Eddy) for six years, but he has never shown an interest in her, for she is just a lowly secretary at his bank. Willie believes the only woman good enough for him would be an angel descended from heaven. So, when an actual angel shows up, Willie thinks he has found his match. However, in a case of "be careful what you wish for," he learns that having an angel for a wife is more troublesome than he'd imagined.