Daniel en Mary zijn een jong koppel in afwachting van de komst van hun eerste kind. Sara, de zus van Mary, komt hen helpen in de laatste weken van de zwangerschap. Dan ontstaat er een relatie tussen Daniel en Sara.
Nee, helaas is Una historia de amor nog niet beschikbaar op Netflix in Nederland.
| Writing | Jorge Grau | Screenplay |
| Writing | Jorge Grau | Story |
| Writing | José María Otero | Writer |
| Directing | Jorge Grau | Director |
| Writing | Alfredo Castellón | Writer |
| Production | Jordi Tusell | Producer |
| Sound | Antonio Pérez Olea | Music |
| Camera | Aurelio G. Larraya | Director of Photography |
| Editing | Emilio Rodríguez | Editor |
| Art | Miguel Narros | Art Direction |
| Art | Teddy Villalba | Set Decoration |
| Costume & Make-Up | Rodrigo Gurrucharri | Makeup Artist |
| Costume & Make-Up | Teresa Plumet | Assistant Makeup Artist |
| Production | Jesús García Gárgoles | Production Manager |
| Directing | Antonio Chic | Assistant Director |
| Directing | María del Carmen San Román | Assistant Director |
| Art | Francisco Gutiérrez | Property Master |
| Art | María Victoria Gómez | Property Master |
| Camera | Fernando Arribas | Camera Operator |
| Camera | Francisco Marín | Assistant Camera |
| Camera | Antonio Millán | Assistant Camera |
| Camera | Alberto Prous | Assistant Camera |
| Camera | Antonio Baños | Still Photographer |
| Editing | Bautista Treig | Assistant Editor |
| Crew | Lleó Borrell | Compositor |
| Crew | Jorge Grau | Compositor |
| Production | Julio Parra | Production Supervisor |
| Production | Isidre Prous | Production Assistant |
