Shaikh Uthaymeen [rahimahullaah] said: If a person says: What will make a man love his wife and vice versa? We say: Allaah has clarified this in His statement:
And live with them honourably. [Soorah An-Nisaa’ Aayah 19]
If every person lives with his wife honourably and vice versa, then love, a strong bond and a happy married life will be established.
[Fataawaa Noor Alad-Darb 6/29. Abridged]