In the real world, we have relationships with individuals, not statistical gender profiles (or, thank God, Woody Allen characters). An individual’s sex drive can’t be predicted to fall at any particular point on the gender spectrum””and those drives also fluctuate based on the cultures we live in, the relationships we form, the age we’re at, and the circumstances of the evening. And, as Dan Savage has repeatedly advised frustrated partners, the Mowers’ model isn’t the only one””other people might find success opening their relationship to other people, or going their separate ways. It’s as much of a mistake to assume that a man needs sex constantly as it is to assume that a woman doesn’t. Better to talk about (and test-run) each partner’s respective sexual and emotional needs before getting hitched””or publishing a trend piece purporting to apply to all people.