Dream about dead rat indicates angry and hurtful feelings. You are relying too much on your social network. A relationship is lacking substance. This signifies the controversial or more frightening choices which you have made or are making. You are not ready to settle down into a committed relationship.
Dead rat dream is a portent for troubling times and disappointments. Your subconscious is trying to protect you from experiencing them directly. A current situation is paralleling a past situation. The dream points at old habits/attitudes and old ways of thinking. Someone want to help you work through your problems.
If you dreamt about dead rat:
The movement of the heavenly bodies encourages you to talk about anything that may have been bothering you lately, such as any areas of particular difficulty between you and your love interest. This is a very positive opportunity, as there is a chance that you will both see things from a perspective that brings a sense of healing, rather than alienating you even further. It will be a very positive dialogue.