That makes no sense - the Spartans were the boy lovers. Man-boy sexual relations were institutionalized in the form of the Agogi.
It actually makes a lot of sense given ancient Greek society did not view sexual relations between males as "normal" so no they were not "man-boy" lover and the Agogi had nothing sexual about it. Infact Greek city states would insult one another like this and they wouldn't have felt insulted if such activities were "normal" but we know from ancient Greek sources such as Xenophon, who lived and fought amongst the Spartans and Plato who says "male on male sex is a crime against nature" homosexual/bisexual or sexual pedastry were thought to be unnatural and deviant behavior by the ancient Greeks.