There are marriages, which in the light of faith, are irregular. They may be called marriages by the civil or traditional society but the Catholic Church regards them as irregular. They include: polygamy, premarital cohabitation and pregnancy, remarriage after divorce, traditional or civil marriage without the sacrament of Matrimony, union between a Catholic and a non Catholic without the appropriate dispensation or permission, women marrying women and men marrying men. They are irregular from thier very foundation or processes.
...coming from the Church herself