God's perfect will is the preservation of society and future generations by the preservation of marriages.
In a similar passage in Mark 12, Jesus widens the scope of the teaching to show that such dissolution may apply to the behavior ...
Matthew 19:9 - And I say unto you, Whosoever shall put away his wife, except [it be] for fornication, and shall marry another, committeth adultery: and whoso marrieth her which is put away doth commit adultery.
Mark -12 - And he saith unto them, Whosoever shall put away his wife, and marry another, committeth adultery against her.
Healing is also necessary to follow God's command to" do unto others what you would have them do unto you," (Matthew ).
If you start dating prematurely, you could be hurting — rather than honoring — those you date.