my ex

Date: 12/14/2016

Me and my ex go way back like almost 3 years ago is when we broke up and now I am with the person I'm going to marry and I am inlove with him but lately I have been dreaming about my ex a lot and they seem so real and I believe that if you dream of someone there's a good chance that they're dreaming about you also I just wanna know what that means. We don't talk anymore or have each other on any social media but we did have one recent encounter, we both were at the same place at the same time and we just talked for 15 minutes and that was it but I just don't get why I always dream about him, any thoughts?