Quote:
TheDragon
Actually, if you want to go "textbookie" it's not programmed in our DNA to be monogamous.
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I do rather like going textbookie.
It is thought monogamy
is biological, research finds that two hormones Vasopressin and Oxytocin are necessary for bonding to take place.
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In prairie vole society, sex is the prelude to a long-term pair bonding of a male and female. Prairie voles indulge in far more sex than is strictly necessary for the purposes of reproduction.
It was thought that the two hormones, vasopressin and oxytocin, released after mating, could forge this bond. In an experiment, male prairie voles were given a drug that suppresses the effect of vasopressin. The bond with their partner deteriorated immediately as they lost their devotion and failed to protect their partner from new suitors
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BBC Science | Human Body & Mind | Science of Love
Love is a drug. Heartbreak is so painful a withdrawal of vasopressin & oxytocin causing pain like that caused by going cold turkey from heroin.