One of the most common questions I hear goes something like this:  “I dreamed of my ex, does it mean I should get back together with them?”  Or, “Does it mean that they are thinking of me too?”
While I never rule out the mysterious and mystical ways of the dream world, and I do believe that anything is possible….The most common explanation is: This dream most likely has NOTHING to do with your ex.  It might, like I said, and do the fact checking with the other person should your heart pull you in that direction.
At the same time, keep in mind that what the dream is most likely bringing to your attention are the feelings you had in the dream, and your dreaming mind might be saying ‘hey, remember what this feels like? Wouldn’t it be nice to have again?’
Not all dreams of former loves come with pleasant feelings, however.  If the feelings are unpleasant or difficult, look at where in your life you might be currently experiencing those same challenges with another person. Perhaps you are responding to a new person in the same way you responded to the ex in the dream.  Or maybe they are behaving towards you in a way that the former partner did. These are some possible explanations to explore.