Now, Let me ask you one question.  Why do you need to get your ex back for what reason? I will give you some ways to get your ex back but, I am not sure you are going to like it.  I think the best way to get your ex back is to ignore them.  To get on with your life.  Let them know that they may be the ex but thats it. They don't affect you in any way.  I have to tell you that is the fastest way to get your ex back for anything that they have done to you.

When you let your self get angry about what your ex has done or is doing you are allowing your self to think to much about them. If you are determined that you need to get back at your ex besides ignoring him or her.

 Go back to the gym, go back to school do the things you couldn't do while they were there. Enjoy life because the happier and more content you are with your life and splitting up the more he will notice.  He or she may even wonder why they didn't see it.  It's called getting on with life. Do a complete make over of who you are.  If nothing else comes of it you will feel better about yourself.

If that doesn't work for you write a web site dedicated to your ex telling everything you wanted to tell everyone.  Remember that he or she can do the same thing so be careful you are playing with fire.

Send a box of viagra to his work, don't send it from the city you are in. Remember no return address.

Psyche him or her out. When you bump into your ex, keep cool, calm - be sympathetic. Mention that you've heard something about how unhappy and all the problems he or she has been having.

Go to craigs list and take out an ad for your ex.  Either a dating one or one that he or she is looking for something.  Make sure you leave the phone number

Send a holiday card in the mail to your ex with you and your new lover.  Make sure you don't address the envelope or they might not open it.

Make a date with their best friend.  That will just kill him or her if you can't get the best friend any of their friends will do.  The key is getting their friends to agree.  Sometimes that can be tricky. If the friend doesn't work out for you try a co worker.

Remember that you don't want to hurt anyone when you are getting back at your ex.  You just want them to know that you are pissed off.  Remember be careful if you ever want to get back with your ex you could be blowing it doing all of this so make sure that you think twice.  No keying the car or putting bleach on their grass or burning things down.  These things are wrong and you will get in trouble and you will look bad. Don't be stupid!

Remember when you are trying to get back at your ex and seek revenge it is best to keep things legal and with in the law or he or she will ultimately be getting you back.  Frankly why waste your time on your ex.