I believe that a relationship is at it's best when one's spouse happens to also be their best friend. That's not to imply that you'd spend 100% percent of your time together. I think though that usually one's best friend is of the same sex as themselves.

How would you all view a relationship in which the hubby's best friend was a woman, no sex involved. But what if your husband's best frend was a woman? Does that constitue adultery or infidelity. Can a man be an adulter without having sex with anothr woman. Is that morally wrong? How far does 'forsaking all others' go?