Chapter Four, Love In Marriage, will take us through paragraphs 89 through 164. This is a lengthy reflection on 1 Corinthians 13. That passage, was not directed at married couples, though it is so often appropriated by them on the wedding day.:
89. All that has been said so far would be insufficient to express the Gospel of marriage and the family, were we not also to speak of love. For we cannot encourage a path of fidelity and mutual self-giving without encouraging the growth, strengthening and deepening of conjugal and family love. Indeed, the grace of the sacrament of marriage is intended before all else “to perfect the couple’s love”.(Catechism 1641) Here too we can say that, “even if I have faith so as to remove mountains, but have not love, I am nothing. If I give all I have, and if I deliver my body to be burned, but have not love, I gain nothing” (1 Cor 13:2-3). The word “love”, however, is commonly used and often misused. (Deus Caritas Est 2)
This last insight from Pope Benedict XVI is spot on. Many people equate love with a feeling, or with relationship chemistry. Love is a conscious choice, a decision, a commitment that includes many other virtues. Some of those virtues are still heroically witnessed among many couples who are prepared for them.
For your reference, remember that Amoris Laetitia is online here.