1.1. The word “spouses” means1° two persons who are married to or in a civil union with each other and who cohabit;
2° two persons of opposite sex or the same sex who live together in a de facto union and who are the mother and father or the parents of one and the same child;
3° two persons of full age, of opposite sex or the same sex, who live together in a de facto union and who, at one time, cohabited for a period of not less than one year.