Right after speaking about Adultery, Jesus' next topic, surprisingly, deals with marriage and this is what he has to say in his sermon on the mount in Matthew 5:31-32:
I can't think of marriage without thinking about my parents. They didn't believe in divorce, for better or worse they stuck it out even when they said they would leave, they stayed together. As children, my brothers, sister, and I growing up, we got to see what a real marriage
31 “Furthermore it has been said, ‘Whoever divorces his wife, let him give her a certificate of divorce.’ 32 But I say to you that whoever divorces his wife for any reason except sexual immorality causes her to commit adultery; and whoever marries a woman who is divorced commits adultery.