This is the simplest of explanations behind such a dream. This can be especially the case, if you have broken up recently and still are in the process of moving on in life. Interpretation # 2. When you dream about your ex, it does not always mean that you long for them or you want them in your life again. It could simply mean that in your dream, you drifted back to the time period when both of you were together. Like in our awake state, sometimes we think about our past and recount the incidents that took place then. In the same way, when we are sleeping, we can go back to earlier times in our life. Interpretation # 3.