Susana Diaz gets a kick out of watching couples’ faces during their first marriage preparation class.

Diaz, who is the manager of marriage ministries for the Archdiocese of Miami, said she likes watching people realize they will be talking about sex, in intimate detail, in a church setting.

“Most of the time that is the first moment that they realize what NFP is, or that the Catholic Church is talking about sex. Some of them, they’re in shock. So yeah, being in that class, it’s hilarious. Seeing their faces is fun,” Diaz told CNA.

Natural Family Planning, or NFP, is the term for a variety of methods by which married couples can chart their fertility to plan and space children according to Church teaching.

Learning a method of NFP is a standard requirement of marriage preparation in most Catholic dioceses throughout the country, and many couples are exposed to the concept of NFP for the first time during marriage preparation. Still, most dioceses find themselves playing catch-up when it comes to having Spanish NFP resources proportional to their Hispanic populations.

And because the topic of NFP can be so intimate and awkward, it is all the more important that it is being presented in a person’s native language, Diaz said.

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