Ernest Greene and Nina Hartley are the ultimate power couple of porn. He is the groundbreaking BDSM and fetish filmmaker, and editor of Hustler’s Taboo magazine. Nina, the legendary porn star, is his wife, slave and muse, as well as a film director, sex educator, feminist and author. This wonderfully candid couple talks to KC about their lives, careers and relationship. They also talk about Ernest’s new erotic novel, “The Master of O,” a modern retelling of the classic “The Story of O” with a twist: the story is told from the dominant’s point of view.