back when i broke up with my most significant ex (long distance breakup) and she was "getting to know" some guy, i politely informed her that there are somethings that cannot be undone, and that if she jumped into bed with some guy, that a door would close that she would never be able to open again. she said "we'll see" - becasue lots of chicks (and guys) are in denial about stuff even before it happens.
so as the story goes, she gets with this guy, and i was really sad. a month later they break up, she madly regrets it, and wants to "Try again". I coulda got mad. I coulda grabbed the guy and smashed his face in and done the karate kid Crane Stance afterwards with an awesome bruce lee "WWAAAaaaaahhhhhhhh!" noise - but nup. I was just like "You cant undo what you did, and I cant forget it. Please dont contact me again." and hung up.
she called every now and again for a few years, seeing if I had changed my mind. Her self esteem went to hell, and now shes with some guy that id give about a 4 out of 10.
My stock, on the other hand, just keeps going up. Life has never been so good. Models and dancers bust my balls for sex, and I weigh up sex versus playing Call of Duty 4, or mixing tracks on my decks, with the latter usually winning.
So yah. What spartacus said. Maintain your dignity. Its going to matter to you a lot more in the coming days than any revenge will, no matter how well executed