Dangers of the Engagement Period (German: Gefahren der Brautzeit) is a 1930 German silent comedy film directed by Fred Sauer and starring Marlene Dietrich, Willi Forst, and Lotte Lorring.^[1] It is also known by the alternative title of Nights of Love (German: Liebesnächte).

The film's sets were designed by the art director Max Heilbronner. It was shot at the Staaken Studios in Berlin and on location in Scheveningen in the Netherlands. Shot as a silent during September and October 1929, it was not released until February the following year by which time sound films were increasingly dominant. It was given a favourable review by Lotte Eisner in the Film-Kurier.^[2]

While making the film Dietrich was also appearing in a stage show alongside Hans Albers.^[3] It was her final film before her breakthrough role in The Blue Angel, which made her an international star and led to her departure for Hollywood.

During a railway journey, Baron van Geldern meets an attractive young woman Evelyne in the same carriage. After the train is derailed, they spend a night together at a hotel, and he falls in love with her. Complications ensue when he discovers that she is engaged to his American friend.