It started 18 years ago with the movie Before Sunrise, when a young couple, Jesse and Celine, played by Ethan Hawke and Julie Delpy, first meet on a train and spend a magical night together in Vienna. Nine years later brought us Before Sunset where they reunite in Paris. Now comes Before Midnight, once again directed by Richard Linklater, where this couple, vacationing in Greece, have been partners for many years and have children together.