[ Singles & Dating ] Open Question : What's the nastiest thing you have done to your ex?

Here's the thing: I need some inspirational answers because I found out that my boyfriend has been cheating on me for a while and has kept telling me all the bullsht about how much he loved me and how he can't live without me and that i'm the perfect girl......................... But I found out. And now I want to show to him who he's messing with. Tell me what have you done so you hurt him really bad? And guys, before you start judging me, leave the page because you really don't know how shitty I feel because he meant a lot to me, but obviously he didn't feel the same way. And it wasn't just an accident. It happened regularly. Oh, and he doesn't know I know. So it's gonna be even funnier. :DD