This section is from the book "How To Intepret Your Dreams", by An Unknown Author.
Every person that appears in a dream is supposed to represent an aspect of ones self, and not actually be about that other person at all; rather, it is a quality or characteristic about that person that your dream is focusing on, and how it applies to YOU.
Try to think about what aspect(s) this could be. It can be something you admire and wish to emulate and incorporate into your own personality, or it could be a more negative characteristic that you may dislike intensely in your waking life, but which is telling you something about yourself and your beliefs, judgments, & attitude.
It could be a call to alter your thinking in some manner, in order to be more open-minded and accepting of this aspect in their and your own personality, because it is hampering your spiritual growth & making life harder for yourself.
The other person in your dream is always mirroring something back to you about YOURSELF. Try to discover what that something is, and go from there. Once you get it through your head that the other person's appearance in your dream is NOT about them, but really about YOU, then you will get much more successful interpreting your own dreams. This takes constant reinforcing—I still find myself wanting to think it's about that other person instead of me. The only exception I know of is if the dream is precognitive.