We're sexually confused and nobody seems to be doing much to clear things up. No one looks at the previous era of sneaky sex and thinks people were nobler because they lied about their behavior. This is no commendation for where we are now. Things are messy. But not messier than what's recorded in the Bible.
People think the Bible is hopelessly na ve about modern sex.
The Bible's message flourished in places where the sexual norms were far more abusive than modern western culture. They lived in towns where sacrificing girls was the main event at the shrine up on the hill. They lived in cities where boys were sex objects for wealthy men. And no one raised an eyebrow, let alone a helping hand. The people of God blew into those cultures like a fresh, but very strange, breeze.