Marriage means taking complete charge of a woman and living peacefully without debauchery. At the present moment, however, debauchery is unrestricted. Nonetheless, society makes a law that one should not marry more than one wife. This is typical of a demoniac society.
According to the Vedic version, there is a hellish planet called Put, and one who delivers a person from there is called putra. The purpose of marriage, therefore, is to have a putra, or son who is able to deliver his father, even if the father falls down to the hellish condition of put.
A grhastha must associate again and again with saintly persons, and with great respect he must hear the nectar of the activities of the Supreme Lord and His incarnations as these activities are described in Srimad-Bhagavatam and other Puranas. Thus one should gradually become detached from affection for his wife and children, exactly like a man awakening from a dream.
So far our society is concerned, we don't allow anybody to remain in our society as friends, girlfriend or boyfriend. No. They must be married.
Divorce is a man-made law and should be abolished
The marriage tie should be taken as very sacred. One who marries for subduing lust is mistaken.
[In Kali-yuga]: Men and women will live together merely because of superficial attraction, and success in business will depend on deceit. Womanliness and manliness will be judged according to one's expertise in sex, and a man will be known as a brahmana just by his wearing a thread.