When a Christian marries he or she is making a commitment to fulfill the responsibility God ordains for the husband or wife to fulfill.He or she is making a commitment to have care and concern for the spiritual, emotional, physical, and mental welfare of his or her marriage partner.
Each of these three relationships have two common characteristics, a commitment to the responsibilities of that particular kind of relationship and a genuine care and concern for the other person in a particular kind of relationship.
Friendship and marriage have a third characteristic - affection and attraction, although the nature of the affection and attraction is different.
A third relationship God describes in the Bible is marriage.
Marriage is a relationship between a man and a woman that binds them together for life.
Song of Songs -11 says "How delightful is your love my sister, my bride!
How much more pleasing is your love than wine, and the fragrance of your perfume than any spice." Only in marriage may a man and woman enjoy expressing their romantic and sexual desires toward each other.
Gen. says, "For this reason a man will leave his father and mother and be united to his wife, and they will become one flesh." This verse tells us that marriage involves the husband and wife severing ties of intimate relationships with parents to cleave to each other.
It involves coming together into a permanent bond of unity.
This liking involves a "friendship kind of" affection based often on personality and common likes and interests.
A second kind of relationship is “brother-sister in Christ.” If we have accepted Christ as our Savior we have become children of God.
Also, in our culture, through "dating" people will often find a life partner and marry.