Although they have loved each other since childhood without admitting it, a surgeon and a young woman see their love thwarted by life.
Unfortunately the movie One Only Loves Once is not yet available on HBO Max.
| Writing | Michel Audiard | Writer |
| Writing | Charles Exbrayat | Dialogue |
| Writing | Paul Vialar | Novel |
| Directing | Jack Pinoteau | First Assistant Director |
| Directing | Jean Stelli | Director |
| Sound | Louiguy | Music |
| Camera | Paul Cotteret | Director of Photography |
| Writing | Jean Le Vitte | Adaptation |
| Production | René Dary | Producer |
| Production | Aimé Frapin | Producer |
| Production | Hervé Missir | Supervising Producer |
| Editing | Andrée Laurent | Editor |
| Editing | Mireille Baron | Assistant Editor |
| Art | Lucien Carré | Production Design |
| Costume & Make-Up | Jacqueline Feinberg | Costume Design |
| Costume & Make-Up | Juliette Verneuil | Costume Design |
| Costume & Make-Up | Georges Bouban | Makeup Artist |
| Production | Robert Christidès | Production Manager |
| Production | Irénée Leriche | Production Manager |
| Production | Jacques Pignier | Production Manager |
| Directing | Jean Lefèvre | Second Assistant Director |
| Sound | Raymond Gauguier | Sound Recordist |
| Sound | René Louge | Sound Engineer |
| Camera | Roger Arrignon | Camera Operator |
| Camera | Sacha Mazour | Still Photographer |
| Directing | Francine Corteggiani | Continuity |
