Relationships are based on how we relate to things or people, but is relating really enough? If you relate to someone its based off of a perception, supposedly personal experience yet that is biased 100% of the time. God only knows what the situation was in reality, but the person going through the experience possibly will take a life time to understand what they lived through the one single moment. So if a relationship is mental its not a relationship. Then the physical aspect there is a thing called "law of attraction," so if its true that for as much as to people men are attracted to women? then also some men are attracted to men we have in nature animals that are gay. So the physical cant be either? sense it is corrupted in the human domain and animal domain. So Spiritual has to be it, God created us in his holy image there for creating us with a spirit to give us consciousnesses, self control, and power to do the impossible love our family's wives and children no matter what the costs and how high are the stakes it takes. As the scripture says men love your wives as Christ loves the church.