Moral Compas
In the 1950s, some parents were aghast at the music their kids listened to. Immoral or improper. Other parents were beside themselves over their kids being romantically involved with people of a different skin tone - this caused more anxiety and anger than music or much else. Some parents felt it was a sign of decline that their kids would wear revealing or tight fitting clothing, smoke, or drink - all of it was a sign of some great collapse. It didn't happen. They all grew up and became pretty conservative as parents (mostly). Looking back it would seem to be more about social compass or legal compass or cultural compass or racial compass - one is not required to be okay with their children dating anyone - its not a moral requirement to be okay with anything. A moral question would be abortion - that does fall into the realm of morality. No where in the New Testament does it say you cannot date someone of another faith ...