At the core of the Christian walk is relationship. This is why as a church Solomon's Porch emphasizes commitment to each other -- whether that be in house churches, in friendships, or in marriage. The greatest two commandments -- to love God and each other -- remains the same regardless of the context.
But because we are all broken, speaking the truth in a relationship is so critical. A loving friend (or spouse) is one who is willing to face rejection in order to speak truth into someone's life who needs it. Through this experience, we are able to experience the grace extended by God and others.