In next month's Source Code, Jake Gyllenhaal plays a man who tries to prevent a commuter train from crashing by going back in time and boarding the train as many times as it takes to accomplish his mission. Even though the movie is an action flick, there's romance, too, as the stakes are raised when Gyllenhaal falls for a passenger, played by Michelle Monaghan. Before the movie comes out April 1, watch this behind-the-scenes look at the movie's love story, and hear what Gyllenhaal and Monaghan have to say about their characters' connection!