Head in the Clouds (2005)

Sharing hedonistic adventures with her favourite lover Guy and close friend, Mia, Gilda exists in a glamorous cocoon of wealth and pleasure as fascism and resistance movements battle for power in the pre-World War II Europe outside the doors of her Paris apartment. When war erupts in Spain, Guy and Mia follow their consciences to fight the Fascists while Gilda stays behind entertaining and bedding Nazis. Opposing ideals and the horrors of war ultimately separate the friends, but love allows their destinies to collide one last time.

Official website: http://www.sonyclassics.com/headintheclouds/