How to Be Loved (1963)

An actress travels from Warsaw to Paris and during the trip reflects on the last few years of her life. It goes back to the German occupation and her hiding of a fellow actor who has supposedly killed a collaborator. He is weak and a bit cowardly, but suffers most from not having any audience for his vanity, ego and supposed bravery. After the war he leaves her but finds out that he has been accused of cowardice. He finally commits suicide and she clears herself of a collaboration charge and eventually becomes a popular actress.