The social organization of ancient Greeks and their perception of sex and life in general vary depending on place and time. Our perception of these matters and the status they hold for us are very different. For this reason, any possible approach must be made not before we have discarded our own ethical code and we have tried to fully understand those men who determined their own way of life and ethics. Sexual love for ancient Greeks was one of the high points of life, therefore they pursued it in various ways. The restraints and guilt we have today were not indulged in. Greeks lived closer to nature than we do and most of all they sought happiness in the ephemeral. As a result their perception of sex is dramatically different from that of the Christian religion. This article refers to two major phases, that of matriarchal society, a period offering only scarce data, when woman had not yet been enslaved by man and enjoyed absolute freedom in sex, and that of partiarchal society. Here are also examined, marriage, prostitution of both sexes, concubinage, the role of the whores, polygamic exceptions in the monogamy of the Greeks, self -eroticism and variations on sexual intercource and finally sodomy, that in ancient Greece had a significant, social, ethical political and artistic effect.