The affection which Allah has created in the hearts of the two spouses is one of His great signs for the people of understanding.  Such people can look at this aspect of Allah's creation and be reminded of the greatness of Allah's work and power and the magnificent mercy Allah has placed in His creation.  Please refer to Sura Ar-Rum: 21.

And among His signs are that He created for you from your selves mates that you may attain calm unto them and He placed between you affection and compassion.   Surely in that are signs for a people who reflect.

He is the one who created you from a single soul and made from it its mate that he may attain calm unto her.

( Al-A'raaf: 189 )

According to this, the relationship between husband and wife should be one of affection, compassion and mutual understanding.  If husband and wife do not find this in their marriage, then they need to look to their Islam and the completeness of their uboodiya (slavery and complete worship) to Allah Most High.  By each of them focussing on the completeness of their Islam and carefully maintaining their obligations toward the other - instead of focussing on the faults of the other - the affection, compassion and great calm or peace of home life will insha Allah be found.

Muslims and Non-Muslims should reflect on the affection which Allah has created in the hearts of the two spouses

It is amazing that two poeple may only have seen each other for just a few minutes prior to being married yet deep love and affection is instilled in their hearts for each other. And it remains in most cases for their entire life on this earch.

However if we look at the uncivalised relationships in which poeple try so hard to get the right partner even doing what can be best described as test drives and not just with one women but many dosens of women. Still the relationship or marraige fails in most cases.

Allah is the one who controls the hearts and it is from He whom we should ask for a good spouse.