These three are always together. It is the holy place to practice God's public love. My sexual organ belongs to my spouse. The family consists of men and women based on the blood lineage. It is the training center to grow into the national family, the worldwide family, and eventually the cosmic family.
True love can make everything happy because it is the concept that existed before life and blood.
Love, life and blood lineage act as a trinity. That is, life is passed on through the blood lineage based on love. To sacrifice love, life and lineage for the sake of others is holy. Though blood is thicker than water, love is much thicker than blood. Love and life can be effective when the person's righteous sex partner's love and life respond to his own love and life.