I once heard a story of a woman who converted to the Catholic faith in her late 20’s. She was unchurched before that. She told some Catholic friends, half joking, that it was so much harder to get a date now that she was Catholic. The reason? Before becoming Catholic she had “no standards”. In fact, she had been living with her boyfriend and had a baby with him before learning about the Catholic faith. After accepting all of the Church’s teachings, she found out how small the dating pool is of others who are willing to go along with those standards.
Among my circle of friends and family who are Catholic, most of the people who married young were those who disagreed with Church teaching, especially where birth control was concerned, sometimes with premarital sex as well. The Catholics I know who agree with Church teaching in these and other areas usually can’t find someone to marry until they’re middle age. Some are older than that and still can’t find anyone. Maybe the author was referring to situations like that.