To dream about your waking relationships indicate wish-fulfillment. Your dream relationship usually parallels your waking relationships in some way and may be highlighting something that you are doing wrong. In your dream state, you may be more incline to confront issues that you would normally ignore or are afraid of bringing up. Compare your dream relationship with your waking relationship.
To dream about a relationship with a stranger represents the different sides of your personality. You may be trying to connect to unknown aspects of your subconscious.