French film, 90s

A girl in Paris is broke, and she lurks with her girlfriend into society receptions and steals food. Then she finds a job a works for a dude, maybe a lawyer. At a certain point she has a threesome with this guy and another man from the movie.
I was convinced the actress was Virginie Ledoyen, but I checked and she isn't, so it's somebody similar.

Could it be this?
"Don't be so down, c'mon young homie
You'll be okay, you'll find real love
All of the stories, the hero gets lonely
Now is the time to show what you're made of"


Secret things (2002) starring Sabrina Seyvecou and Coralie Revel?

Thanks for the suggestion, but no