Heterosexuality means sex between people of the opposite gender - from hetero, different . The terms apply to both women and men. Both homosexual courtships and ongoing homosexual relationships have been observed among lions, porpoises, porcupines, monkeys, and a variety of other animals - despite heterosexual opportunity. Established lesbian and gay couples take more time making love, and place much more emphasis on the exhange of pleasure.
Heterosexuals are more goal oriented .
One in ten people are estimated to be homosexual. But distinctions are not clear cut. Classical Greece Love between men was idealized. Sappho of Lesbos, a Greek poet of the fifth century BC, gave her name to Lesbianism. Judeo-Christianity Sacred sodomy was practised up to the time of exile from Babylon and rabbis were often homosexual.