Only death can dissolve the bond, assuming that it is in fact a valid marriage. Imagine if the Lord Jesus one day decided that he'd had enough of our infidelity and walked out on us. He is the bridegroom, and we as church are his mystical bride. The total self-giving necessity in marriage must be mutual obviously, or it doesn't work. It must be constant and faithful, and it is fruitful.
Love is fruitful.
Only in heaven will we know how magnificent, how holy, how beautiful is the reality of being a mother and father. Children are a gift. To enter together into the sanctuary of God's own creative power is an incalculable blessing. Love each other. Support each other.