The Dreamers (2003)

The tumultuous political landscape of Paris in 1968 serves as the backdrop for a tale about three young cineastes who are drawn together through their passion for film. Matthew, an American exchange student, pursuing his education abroad in Paris, becomes friends with a French brother and sister duo, named Theo and Isabelle, who share a common love of the cinema. While the May 1968 Paris student riots--which eventually shut down most of the French government--are happening around them, the three friends develop a relationship unlike anything Matthew has ever experienced, or will ever encounter again. Written by Sujit R. Varma
(from http://www.imdb.com/title/tt0309987/plotsummary)