A love triangle is a scenario or circumstance, usually depicted as a rivalry, in which two people are pursuing or involved in a romantic relationship with one person, or in which one person in a romantic relationship with someone is simultaneously pursuing or involved in a romantic relationship with someone else. A love triangle typically is not conceived of as a situation in which one person loves a second person, who loves a third person, who loves the first person, or variations thereof.

Jules and Jim is a 1962 French New Wave romantic drama film directed, produced and co-written by François Truffaut. Set before and after World War I, it describes a tragic love triangle involving French Bohemian Jim, his shy Austrian friend Jules, and Jules's girlfriend and later wife Catherine.