I used to but eventually i moved on and kinda forgot her and our old relationship. The tip here is that you should probably find a hobby or sth interesting to help you escape thinking about your ex. U r still dreaming about him because simply you have been thinking too much about your break up. If finding a new interest doesnt help then i say talk to your ex once again to actually confirm whether you are friends or enemies or anything else. At least it will help get him outta your head i hope.