You broke up with your old flame ages ago but had that dream you had a date with your ex. In this dream, you finally discover why that relationship broke. This kind of dream is a reminder and warning. Your inner consciousness sent you a message to tell you why that relationship didn’t work out. You had this dream because something during your day triggered it. You may have thought of your ex, or seen something that reminded you of your old flame.
Dreaming of an old boyfriend or girlfriend does not mean it is a sign that you should get back together.