In pagan societies, and Islamic society is definitely included, women tend to be very tightly sequestered. Men have no access until married which may not happen at a particularly young age. Women outside of an unmarried young man's immediatê family are mythical creatures about whome he has heard much as with those 72 virgins or raisins he will get when he dies gloriously slaying infidels. Anyhow, in scuc ocieties, and the wonderful ancient Greeks were prime examples. Warriors- young men take boys as consorts until the young men get married off by their families. Young boys grew up to be young men and reverse the relationship.
http://www.catholiceducation.org/articles/homosexuality/ho0003.html
The URL is Dennis Prager's explanation and history of the phenomenon and why it is Judeo Christian societies that have prospered in the West and others have not.
This is a bit of an oversimplification. In every society, since before the dawn of civilization, men have always had access to female prostitutes. At any age.
They don't call it "the oldest profession" for nothing.