Women are more faithful than men. Women cheat for love; men cheat for sex. Women are less sexually adventurous than men. It's a script that many of us -- whether clinicians or Hollywood -- follow when thinking about female sexuality. Yet it's a script based on unfounded assumptions about the way women view, pursue and engage in sex, writes Wednesday Martin, author of "Untrue," in which she mined the data and interviewed 30 experts and women from all walks of life to uncover the facts about female sexuality.