After this movie was released restaurants were suddenly bombarded with requests for pink champagne.

This was Irene Dunne's favorite among her films. This also happened to be Charles Boyer's favorite among his films as well.

In 1957, director Leo McCarey remade the movie as An Affair to Remember (1957), starring Cary Grant and Deborah Kerr. (Cary Grant and Irene Dunne had previously co-starred in The Awful Truth (1937), which was also directed by McCarey.) The movie was remade a second time as Love Affair (1994), starring Warren Beatty, Annette Bening, and Katharine Hepburn, directed by Glenn Gordon Caron.

Charles Boyer and Irene Dunne were paired again as a romantic couple in When Tomorrow Comes (1939), made the same year as this film. Both films feature a scene where Dunne sings while Boyer plays the piano. Their third and final film together was Together Again (1944).

"Lux Radio Theater" broadcast a 60 minute radio adaptation of the movie on July 6, 1942 with Charles Boyer and Irene Dunne reprising their film roles.

Astrid Allwyn, who plays Boyer's heiress fiancé, also appeared in the unrelated film Love Affair (1932), starring a young and relatively-unknown Humphrey Bogart.

"Lux Radio Theater" broadcast a 60 minute radio adaptation of the movie on April 1, 1940 with Irene Dunne reprising her film role.

According to the newspaper headlines displayed on screen, Charles Boyer's character name is Marnay in the US version and Marnet in the French one.

Two years later in 1941, this was again adapted for radio by the Screen Guild Theater with Madeleine Carroll & Melvyn Douglas. The transatlantic cruise was rerouted to come from Rio as part of Hollywood's pivot to South America during WWII.

Among some of the things Michel tells Janou in French is: "you look younger every time I see you! How is that possible?"

When Irene sings in French "Plaisir d'Amour", she is heavily accented.