Scripture gives us several distinguishing marks of a friend who loves like a brother. We know, "We love because He first loved us.” Love is sourced in and originates from God’s love for us. Our love for Him produces the fruit of love for others. This is how we can "Be devoted to one another in brotherly love. Honor one another above yourselves."
In marriage it is important to learn that people are different and therefore have different expectations and patterns and therefore conflict will always be an issue. We all bring expectations to marriage. We all have them and often we don’t realize that we have them until something in the relationship points them out.