Yes, but only with children. Gay sex between adults was anathema, but allowed.

Apparently, the Greek pedophiles required that the children "choose" them. They had courting rituals, giving gifts, entertaing, etc. Men would compete for boys affection, and they had theories of consent. How it actually worked in practice isn't that clear though. The records don't even specify the type of conduct they engaged in, which makes some sense, because sexual practices weren't well documented until the middle ages.