God created us specifically for a special relationship with Himself. However, the relationship God established was shattered when Adam and Eve disobeyed Him and sinned. Without a relationship with God, all our human relationships are marred. The love required in human relationships comes only from God. You can't really love your spouse, children, neighbors, associates at school or work, unless God's love flows through your life.
Love is like a painter's canvas.
Unless we have the agape love of God in our hearts, none of the other things God wants in our lives have anything to which they can adhere. Many marriages fail and relationships are destroyed because the lack of a relationship with God causes all other relationships to suffer. The thirteenth chapter of 1 Corinthians is the greatest passage ever written about relationships. The believers at Corinth thought that spiritual gifts, especially speaking in tongues, were the ultimate manifestation of spirituality and God's approval. There were divisions, confusion, and contention in the church about the most important gift.