131. I would like to say to young people that none of this is jeopardized when their love finds expression in marriage. Their union encounters in this institution the means to ensure that their love truly will endure and grow. Naturally, love is much more than an outward consent or a contract, yet it is nonetheless true that choosing to give marriage a visible form in society by undertaking certain commitments shows how important it is. It manifests the seriousness of each person’s identification with the other and their firm decision to leave adolescent individualism behind and to belong to one another. Marriage is a means of expressing that we have truly left the security of the home in which we grew up in order to build other strong ties and to take on a new responsibility for another person. This is much more meaningful than a mere spontaneous association for mutual gratification, which would turn marriage into a purely private affair.
Do you see this as a problem, that some marriages are contracted indeed to conduct this private affair.
As a social institution, marriage protects and shapes a shared commitment to deeper growth in love and commitment to one another, for the good of society as a whole. That is why marriage is more than a fleeting fashion; it is of enduring importance. Its essence derives from our human nature and social character. It involves a series of obligations born of love itself, a love so serious and generous that it is ready to face any risk.
Remember that Amoris Laetitia is online here.