The words you use may speak volumes about your marriage
You've heard, "there is no 'I' in team." Well, there is something to how you think of your identity when you are linked to another. As study found that couples who usually use "we," "us," "our," etc., were in a stronger relationship than those who use "I," and "me," in contradistinction to "you."
So the idea of ishto kegufo - his wife is like himself [literally, his body] really illuminates how very together the couple should be in terms of identification.