THE DARK ANGEL. Merle Oberon & Fredric March 

SINOPSIS: film that tells the story of three childhood friends, Kitty (Merle Oberon), Alan (Fredric March), and Gerald (Herbert Marshall) who come of age in England during the First World War. Kitty Vane, Alan Trent, and Gerald Shannon have been inseparable friends since childhood. Both Alan and Gerald are in love with Kitty, who in turn has been infatuated with Alan her entire life.
Gerald and Alan are drafted into World War I. They return home for ten days, during which time Alan proposes to Kitty and she joyously accepts. Despite his own love for Kitty, Gerald gives the couple his blessing. However, the newly engaged couple's happiness is cut short when Gerald and Alan are ordered back to the front the very next day. Kitty and Alan search for somebody to marry them, but there is not enough time. They decide they do not need to marry officially, and agree to spend the night together before Alan must return to the war.