Consider the name of my column, for crying out loud. Revenge on your ex, even if it's just internal fantasy, is always a bad idea. Every bitter act and thought just mires you deeper in the hole. Don't use her photos to housetrain the dog. And don't send souvenirs of the puppy's housetraining to her in a shoebox with no return address, as funny an idea as it may sound.
Pride slows recovery.
You may have been ready to get out of it, but someone always pulls the plug unilaterally, even if your passive-aggressive behavior was designed to get her to do it first. People will buy you sympathy beers. A good way to meet women is to go to a club with another woman who's just a friend, but seems to be your Significant Other. They can tease and flirt with you, liberated by no danger of consummation, as you're already spoken for, as far as they know. Stealing another girl's guy is something women live for, whether they admit it or not.