July 11

He realizes your desire to get married is quite a natural one, and he will pray that God will assist you to find a suitable companion with whom you can be truly happy and united in the service of the Faith. Baha’u’llah has urged marriage upon all people as the natural and rightful way of life. He has also, however, placed strong emphasis on its spiritual nature, which, while in no way precluding a normal physical way of life, is the most essential aspect of marriage. That two people should live their lives in love and harmony is of far greater importance than that they should be consumed with passion for each other. The one is a great rock of strength on which to lean in time of need; the other is a purely temporary thing which may at any time die out. 
(From a letter dated January 20, 1943 written on behalf of Shoghi Effendi to an individual believer; Lights of Guidance)