I've always wondered about that as well. History books were written by men. In most ancient and even in the past 200 years of western civilization, men were in charge, and women were house-wives. Women rarely had an opportunity to do anything historically noteworthy, so women were often rarely included in the historical accounts of the various civilizations.

This makes me wonder if perhaps a female pederasty existed.

Ironically, male girl-lovers were probably generally accepted, because age of consent is a modern institution, as well as girls often marrying at an early age.

It's funny how our society has regressed so much in the last 100 years.