In my mormon marriage, the intimacy between us was lacking, to say the least. The husband stopped holding my hand, caressing me, looking into my eyes when he spoke to me, kissing me, snuggling with me, spooning with me, giving me back rubs, fondling my hair, pulling me into him to hug me, nothing. All of this started waning by the 5th year of marriage. It was completely gone by the 10th year of marriage. The sex was gone by the 15th year.
This link explains part of the problem: http://www.i4m.com/think/sexuality/mormon-depression.htm