It’s called adultery, maybe because it’s committed mostly by adults who find it easy because contraceptives are ready to hand, but the young start early, and there is nothing more discouraging than a beautiful young lady bent on a career of free sex. What can parents do about it?
You start early. She has to learn the Judeo-Christian culture before she learns the words to some of these promiscuous songs. A before B, plain song before a band of guitars and drums. And good clean friends are important. For everybody.
Does being old-fashioned bother you? Some of those oldsters know the paths through the woods. They knew the way.