Homosexuality in ancient Rome often differs markedly from the contemporary West. Latin lacks words that would precisely translate "homosexual" and "heterosexual". The primary dichotomy of ancient Roman sexuality was active/dominant/masculine and passive/submissive/feminine. Roman society was patriarchal, and the freeborn male citizen possessed political liberty (libertas) and the right to rule both himself and his household (familia). "Virtue" (virtus) was seen as an active quality through which a man (vir) defined himself. The conquest mentality and "cult of virility" shaped same-sex relations. Roman men were free to enjoy sex with other males without a perceived loss of masculinity or social status, as long as they took the dominant or penetrative role. Acceptable male partners were slaves and former slaves, prostitutes, and entertainers, whose lifestyle placed them in the nebulous social realm of infamia, excluded from the normal protections accorded to a citizen even if they were technically free. Although Roman men in general seem to have preferred youths between the ages of 12 and 20 as sexual partners, freeborn male minors were off limits at certain periods in Rome, though professional prostitutes and entertainers might remain sexually available well into adulthood.
Same-sex relations among women are far less documented and, if Roman writers are to be trusted, female homoeroticism may have been very rare, to the point that Ovid, in the Augustine era describes it as "unheard-of". However, there is scattered evidence—for example, a couple of spells in the Greek Magical Papyri—which attests to the existence of individual women in Roman-ruled provinces in the later Imperial period who fell in love with members of the same sex.
During the Republic, a Roman citizen's political liberty (libertas) was defined in part by the right to preserve his body from physical compulsion, including both corporal punishment and sexual abuse. Roman society was patriarchal (see paterfamilias), and masculinity was premised on a capacity for governing oneself and others of lower status.