That rumor that the Spartans practiced pederasty was already common in ancient Greece but the best ancient source on Sparta, Xenophon, explicitly said it wasn’t true. There is no eyewitness report of it happening or any archeological or literary evidence. Their women alone among the Greeks received an education, managed the estates while the men concentrated on war, and married men of basically their own age, unlike elsewhere where young girls were passed off to lechers. Sparta by the way is the only country with which Judea made a blood brother pact.