the museum thing may be true, and i know women are more likely to cheat when they are ovulating (sp?). but if men and women had equal sex drives, why are men so much more eager. in one experiment when a male (who worked for the experimenter) asked a female (chosen randomly) to have sex with him, she only said yes about 25% of the time. in the opposite scenario, the man said yes more than 75% of the time.
but there are cultural considerations, as your in england and im in america, and i heard americans are much more up-tight about sex.
but this is what i learned too. men produce millions of sperm, women can only have about 20 kids total in their life. so it would have the greatest genetic survival value for the man to have sex a lot and the women to protect her eggs, since she has to be chosey. its real hard to explain here, but read On human Nature by E.O. Wilson or The moral animal by robert wright.
anyways im going to bed, got to catch the dawn patrol tomorrow