Fornication is a sin, and Jesus teaches that even lustful thoughts can be sinful, so Catholic couples should dress modestly on dates. In Love and Responsibility, Pope John Paul II emphasized that, since men are more visually attracted, women must consider male psychology when deciding how to dress.

What is considered an invalid marriage in the Catholic Church?

Lack of canonical form Members of the Catholic Church are required to marry in front of a priest (or deacon), and normally with at least one other witness, which can be a layperson. If no dispensation was granted and the couple did not observe this law, the marriage is considered invalid.