What's the film called set in the French Riviera about two 'gold diggers' in their 20's?

I saw a film a while ago about two young people - a guy and a girl -
who bumped into each other but couldn't be together. It turned out
they were both using rich older people to get a high flying lifestyle
for themselves. The film was a drama and comedy but I can't remember
its' name. Can anyone help please?