31 Even in Catholic States the evil existed. For whenever at any time divorce was introduced, the abundance of misery that followed far exceeded all that the framers of the law could have foreseen. In fact, many lent their minds to contrive all kinds of fraud and device, and by accusations of cruelty, violence, and adultery to feign grounds for the dissolution of the matrimonial bond of which they had grown weary; and all this with so great havoc to morals that an amendment of the laws was deemed to be urgently needed.
Source: Arcanum Divinae (Vatican.va)