Can someone help me with this short film?

I once saw a great short film.I’m not sure but I think it was french.
The plot was: a middle-aged women was in the subway and a man appears and he starts talking about love and he says that if someone is willing to meet with him should get out of the subway at the next station.He is arguing with some travelers and when the subway arrives at the next station the women gets of and the man tells her that they were just filming and none of what he said was real.
Can you help me identify this short film?