What's done is done. Intentional or not, just see it as a lesson and move on. Life isn't fair and what will revenge achieve? Trouble. I'd just move on, and simply ignore them and take it as a lesson.
What if they don't want let you go, what if the cheater is not satisfaed enaught, and they usualy are not satisfaed if you don't fight back, they want more and more and if you don't stop them, they will continue to humuliate you.
