" Love affairs in a modern sense occurred in classical times only outside of official society. The shepherds whose happiness and woe in love is sung by Theocritos and Moschus, such as Daphnis and Chloë of Longos, all these were slaves who had no share in the state and in the daily sphere of the free citizen. Outside of slave circles we find love affairs only as products of disintegration of the sinking old world. Their objects are women who also are standing outside of official society, hetaerae that are either foreigners or liberated slaves: in Athens since the beginning of its decline, in Rome at the time of the emperors. If love affairs really occurred between free male and female citizens, it was only in the form of adultery. "

― Friedrich Engels , The Origin of the Family, Private Property and the State