Thank you Gupshup user SindSagar for copying and pasting the definition of coy. I would have never figured it out on my own.
Also: That is not a radical prediction to make. When has there ever been a society that has been swept clean of promiscuous behavior? Brothels have always been around (at the very least) and plenty of debauchery has gone on in many societies around the world even it has been looked down upon.