They should never bring up their past because it is like undoing the dressing and starting the wound fresh. They should mind their language. So before we says something, we should think how these words will affect the other person or if we are the recipient of those words, how we would feel. They should have a sense of humor. One woman describes her husband in this way, that many men had proposed to me and they liked me, but I chose him as my mate for the rest of my life because he makes me laugh all the time.
Life is too short to be too serious.
If we have a smile for each other when we greet each other and. Both of them should share household duties together. It is not fair that women are used as a cook and as a maid and as a babysitter while men enjoy all outdoor and outside of the home social activities. They should find occasions to give each other a gift or flowers or candy, whatever a small thing that may be. This is not a western concept.