I’ve read hundreds of conversion stories through my youtube & have attended OCIA (the class you take to become Catholic) for 3 years, so I can definitively say that most people don’t convert because they’re getting married. The vast majority of people find Catholicism to be true independent of any romance. It’s just cognitive dissonance how many non-Catholics assume conversions are not rational and intellectual, as a way to avoid researching into Catholicism for themselves. There are definitely

"The soul which recommends itself to me by the recitation of the Rosary shall not perish." - Mary to St. Dominic | Catholic Live