The End of the Affair (1955)

During the 1940s, Maurice Bendrix, a writer recently discharged from the armed service, falls in love with Sarah Miles, whom he interviews for a book. Sarah is married, but she and Maurice eventually give in to their mutual attraction, leading to an affair that lasts several months. Maurice's jealousy, along with the bombing of London by the Germans, seemingly leads to the end of their relationship. However, the reasons are later revealed to be more complex.