Umar (radi Allahu ‘anhu) said to a man who was thinking of divorcing his wife:
“Why do you want to divorce her?” He said, “I do not love her.” ‘Umar said,
“Must every house be built on love? What about loyalty and appreciation?”
(Al-Bayan wa at-Tabayeen, 2/101]
http://questforparadise.wordpress.com/2012/05/31/love-loyalty-appreciation/