A relationship is only as good as its communication.
When we are in a healthy relationship, we tell the other person who we honestly think we are. This assumes we are reflective enough to have self-understanding, and mature enough to risk self-exposure. And, it assumes the other person is capable of the same thing.
In real relationships we are open to others correcting false self-understandings which are hurtful and destructive. Unless they help us, we cannot grow.
Relationships are about talking of things that matter most to us - our feelings, our needs, our values, and our dreams.
Relationships include bonding and boundaries, closeness and breathing room.
Relationships are covenantal - they are about the "for better or for worse" commitments that make authentic communication safe.