Pablo and Blanca have decided to try swinging, but ignore its first and most fundamental rule: to abstain from doing so when things aren't going well in a relationship. To bring this about, Pablo and Blanca each call a friend who is single, Lucas and Mia respectively, thereby ignoring the second cardinal rule: to only swing with another couple.
| Actor | Role |
|---|---|
 Enrique ArceNot listed | Not listed |
 Macarena GómezNot listed | Not listed |
 Luis Miguel SeguíNot listed | Not listed |
 Lorena LópezNot listed | Not listed |
 Paco AlegreNot listed | Not listed |
 Diego BraguinskyNot listed | Not listed |
| AAinhoa CebriáNot listed | Not listed |
| MMarisa MerinoNot listed | Not listed |
| XXavi CastilloNot listed | Not listed |