Does disliking one
    another and not having any conjugal relations for years cancel out a marriage?
Question

                My friend and his wife are living horrible
      life.
    They do not like each other.
     They do not have intercourse since last six years.
    Wife does not allow his husband to have intercoure.
   Do they have a relation of husband and wife?
 Do they continue their life?
What do you suggest for them?
Praise be to Allah.We put this question to our shaykh, Shaykh ‘Abd al-Rahmaan 
  al-Barraak, who responded as follows:
Yes, the relationship between them is that of husband and wife. 
  So long as he does not divorce her, she is his wife. The marital contract is 
  not cancelled by a lack of love between the spouses or by whatever disputes 
  and differences there may be between them. It can only be cancelled if her husband 
  divorces her or the marriage is annulled. Both partners should fear Allaah, 
  and the husband should treat his wife decently. If he dislikes her, he should 
  either keep her and treat her decently, or let her go in a proper manner. The 
  wife should fear Allaah, give her husband his rights, put up with his bad treatment 
  and obey him in things that are good and proper. And Allaah knows best.
With regard to the ruling on the case of a wife refusing her 
  husband’s call to his bed, see Question # 2006.