This belief is very misogynistic. It stems from My Girl Is Not a Slut (and very possibly Mommy Issues), and suggests that only chaste girls have a chance at happiness; women who don't fit this mold are just trash; some men use this as justification for rape and Honor-Related Abuse. It also neglects the sexual needs of the "good" women, and relegates those of the men to being fulfilled by illicit relationships. It could also involve creepy obsession, and Loving a Shadow, an idealistic fantasy, rather than a real person. Many societies past, and some present, have bought into this dichotomy (see All Women Are Lustful and Defiled Forever and Honor-Related Abuse). The inexorable, albeit flawed, logic of The Complex holds that ''everyone'' can be categorised this way... which is bad for non-'Madonnas' as being a 'Whore' often means that others can basically treat you (as badly) as they like because, hey, 'Whores' are not moral and/or human. Needless to say, The Complex is very silly. More than that, it's also bad for people; it teaches people that 'good/moral/human' females have no sexual desires, and that 'good/moral' males don't have sex with other people; just impure/immoral/sub-human people. Given that The Complex often goes hand-in-hand with monogamous heterosexual relationships, this often necessitates illicit/secret adultery for everyone to sate their sexual desires as it would be immoral for either spouse to actually want to have sex with the other because they are both 'too good' to indulge such sinful acts. Having sex with an immoral/subhuman person is absolutely fine, however, and is almost ''expected'' of males in these sex-less relationships because All Men Are Perverts. How Madonnas become mothers without the use of in-vitro fertilisationnote is politely glossed over... except when it isn't. Commonly found in works before the 1960s or so, when people first began to publicly admit - in large numbers - just how silly the whole thing was. Remember, according to the Madonna-Whore Complex all women are either promiscuous, immoral (often Evil Is Sexy) seductresses or sweet, naive ingenues and the elegant (chaste/sex-less) matriarchs they become. 'Good' people who are sexually active do not exist - or at least, 'Good' females. "Of course" a man will have sex with a few 'Whores' here and there. That doesn't make 'them' immoral of course, what a silly question, why did you even ask...?