An adult who is sexually attracted to adolescents(noun)
An adult who engages in sexual activity with adolescents(noun)
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Use "ephebophile" in a sentence
"As a tag, "pedophile priest" readily and simplistically summons indignation that "ephebophile," a far more obscure word, does not."
"At what point does the man cease being a homosexual and suddenly become an "ephebophile" who, for some strange reason and in a thoroughly non-homosexual way, only targets male adolescents?"
"I don't much care for the term "ephebophile": preying upon sexually mature persons, male or female, is clinically distinct from pedophilia."