Catholic and protestant dating
My Husband's first wife, screamed at Sunday Mass attendance, Holy Day Mass attendance, she abhorred the Holy Rosary and he being a Fourth Degree Knight of Columbus and a Grand Knight ...
Differences about faith and the very notion of marriage, but also different religious mentalities, can become sources of tension in marriage, especially as regards the education of children.
Discussion related to living as a Catholic in the single state of life.
As long as a topic is being discussed from the perspective of a single Catholic then it will be on-topic.
A relative of mine grew up in the Anglican Church but she had no real engagement with it, either personally or as a family. So when her Catholic hubby to be came along he invited her to Mass and showed a good witness of faith, as did those he brought her into contact with.
She fell in love with the Catholic faith and went through RCIA and became a Catholic as an adult and is one of the most involved and active Catholics I know in the family.