If the secrets to finding true love are often elusive, well, so are the secrets to making films about love. How do you inject humor into a film about heartbreak? How do you portray a happy romance without being too saccharine and oversentimental? Author and filmmaker Davy Rothbart, at work on a personal documentary called My Heart Is An Idiot, has asked a collection of talented and eclectic friends to explore these and other challenges by producing short, love-related films of their own.