, whether by external influence or they just pop in your head, you'll probably remember all of the things that you thought was so wonderful about them. This is the biggest reason why thinking about them is so painful, because you are thinking only in terms of good things that you no longer have. Remember, however, that there were probably many things that you didn't like about your ex that may have even really gotten under your skin at times. These are the memories that will serve best in moving on after a break up. Use them to your advantage.