To dream of an imitation of something, is an indication of lacking a feature or function in your life. To see a dummy in your dream represents that a critical element may be lacking in your relationship. Also, there might be a shortage for some component in a situation. Something is limiting your chances to show up true self. Alternatively, you are feeling unchallenged and unfulfilled. Maybe the relationship is making your emotions empty and blank. The dream about dummy may also show to how you or someone has acted idiotically and stupidly in a situation.
Read more about dreaming of Dummy in other dream meanings interpretations.