Your username is apt.

This title is definitely clickbait-y. The Greeks had a very limited, socially acceptable context for homosexual acts, they had nothing (that we know of) resembling modern attitudes.

This is all with notable asterisks, however. "Sapphic" and "Lesbian" originate from a poet, Sappho, residing on the Greek island of Lesbos, whose work was very... Lesbian.