The soft core version may be quite a bit different.
Male cast -
- Jean Roche (aka Claude Dupont?) plays Paul
- Roland Charbaux
- Ray Prevet
- Christophe Alberola
- Stéphane Maury
One of the males seems to be the lad who was seduced by the young Joelle (Béatrice Harnois) in Le Sexe qui parle.
One of the party guests has the character name Pierre.
The blonde student of Paul's is called Bridget and is probably Nicole Daudet.
Felicia comes to stay with Gabrielle and Paul. She is a petulant adolesecent who seduces everyone she encounters, including two models, Eva Khris and Marlène Myller, who are being photographed by Gabrielle. Paul resists, but eventually succumbs. On discovering this Gabrielle is at first upset then joins in.
See also here.