Look I don’t disagree that dating someone with a different religious background can be difficult and that is a legit reason to avoid that.
But as a protestant I was taught that Catholics were going to HELL. As were Orthodox, and probably Lutherans. Jews were famously condemned to hell by Pastor Bailey Smith of the Southern Baptist convention.
I think I will leave condemning to hell to Jesus.
The whole fascination and certainty of hell for other people is not what Christians should be thinking about. Pretty sure that Christians should focus on themselves and not worry about the spiritual status of their neighbors.
Since we have divorced sexual activity from procreation by the use of artificial contraception and the abortion culture. it has become considerably more difficult to understand not only why it is better to be married to a person of the same belief system. It also has made it questionable as to whether it is even important if the person you marry is even of the opposite sex. Or even as to why you couldn't marry multiple people of multiple sexes.
To put it bluntly. If the Catholic Church is ,as so many here on FR believe, the Whore of Babylon, than all Catholics will go to Hell.
If it is, as the Church of Rome and it's two dozen aligned Churches agree, only possible to gain access to heaven through adherence to the teachings of the one true Church, than all Protestants, Jews and any other who professes and follows a different religion will most certainly burn in Hell for all eternity.
Take heart, either way we will have lots of company with all the Cafeteria Catholics and probably myself as I am certainly full of sin.
As I always tell the Jehovah’s Witnesses when they come to my door: “I am a Catholic. I can not be saved. Have you seen the rules of the Catholic Church? They publish them in the Catechism. No One can live like that!”
“I think I will leave condemning to hell to Jesus.”
As a Christian, we’re supposed to be and act like Jesus as much as possible, except when it comes to judging and condemning, because only He has been granted these powers, which is what He claims.
“Pretty sure that Christians should focus on themselves and not worry about the spiritual status of their neighbors.”
Jesus didn’t come here to focus only on Himself and His followers. He came here to save us all spiritually. And in His Great Commission, he commanded His followers to make disciples of others. So Jesus would disagree on your point.