This is from Wiki so take it for what it's worth
"
Pederasty or
Paederasty (
US: /ˈpɛdəræsti/, UK: /ˈpiːdəræsti/) is a (usually erotic) relationship between an older man and an adolescent boy outside his immediate family. The word pederasty derives from Greek (paiderastia) "love of boys",[2] a compound derived from παῖς (pais) "child, boy" and ἐραστής (erastēs) "lover"."
"Age range
Some modern observers restrict the age of the younger partner to "generally between twelve and seventeen",[7] though historically the spread was somewhat greater.
The younger partner must, in some sense, not be fully mature; this could include young men in their late teens or early twenties.
[8]
While relationships in ancient Greece involved boys from 12 to about 17 or 18 (Cantarella, 1992), in Renaissance Italy they typically involved boys between fourteen and nineteen,
[9] and in Japan the younger member ranged in age from 11 to about 19 (Saikaku, 1990; Schalow, 1989).
[10]"