The World, the Flesh and the Devil (1959)

In the movie "The World, the Flesh and the Devil" released in 1959, the story follows a man named Ralph Burton who finds himself in a post-apocalyptic world after a cataclysmic event wipes out most of humanity. Ralph struggles with loneliness and survival until he meets Sarah, another survivor, leading to a complex dynamic between them. As they navigate their new reality, tensions arise as another man, Ben, enters the picture, creating a love triangle that tests their humanity and beliefs.