We were told not to date them...and come prom time...don't even think about bringing a non-Catholic.
It was a steadfast rudder that guided me FLAWLESSLY.
I was taught as a teen to not date Catholics because they were going to hell while you were being taught that I was going to hell and not date worthy as a protestant...
Religious experiences can really suck eggs.
Regardless of what we would like to believe in our secular society. Marriage is NOT for the benefit and happiness of their adherents. It is for the benefit of the children that a sexual act often produces and for the further benefit of the greater society. Often times nonreligious people become religious and even strongly so once they have children.
When people have differences as intimate as their beliefs in God and the idea of eternity and how to gain Paradise, undo pressure is applied to the union often leading to a dissolution of said marriage and a society that has children from broken homes with whom to contend.
The good sisters spoke quite wisely as to whether it was a good idea to date members of other religions as the reason to date is to find a mate.