Pedagogic erotic relationships are also documented for Sparta, together with athletic nudity for women. Plato's Symposium mentions women who "do not care for men, but have female attachments."
By their late teenage years, at least 3/4 of all men and women have had intercourse, and more than 2/3 of all sexually experienced teens have had 2 or more partners [Sexual and Reproductive Health: Women and Men. 2002]