Some forms of union radically contradict this ideal, while others realize it in at least a partial and analogous way. AL 292.
In such situations, many people, knowing and accepting the possibility of living as brothers and sisters which the Church offers them, point out that if certain expressions of intimacy [i.e., sexual intercourse] are lacking it often happens that faithfulness is endangered and the good of the children suffers ( Gaudium et spes, 51). AL fn. 329
The Synod Fathers stated that the Church does not disregard the constructive elements in those situations which do not yet or no longer correspond to her teaching on marriage.AL 314
Gradualness in Pastoral Care
The Fathers also considered the specific situation of a merely civil marriage or, with due distinction, even simple cohabitation, noting that when such unions attain a particular stability, legally recognized, are characterized by deep affection and responsibility for their offspring, and demonstrate an ability to overcome trials, they can provide occasions for pastoral care with a view to the eventual celebration of the sacrament of marriage.AL 315
Hence it is can no longer simply be said that all those in any irregular situation are living in a state of mortal sin and are deprived of sanctifying grace. AL 339
Since when did mortal sin could no longer be stated as such? Since the new pope came into town?