Romance films, like any genre, have their own following. While they might not host conventions like the horror and sci-fi crowds, but they are a dedicated lot that go beyond the stereotypical Jennifer Aniston admirer.
Like romance films, cult films have a special kind of audience, special meaning eclectic. Sometimes taboo, sometimes experimental, and always unorthodox, the cult film is not a genre in itself but a philosophy that covers all genres.
Everyone knows cult horror or sci-fi films, and with a little digging, one can discover followings for foreign films, stoner comedies, so-bad-they're-good films, and strange musicals you won't find next to Hairspray or Les Miserables on Walmart store shelves. An often overlooked category of the cult film would probably be the romance film, due to the stereotypes connected to the genre.