Revenge? What can I say to that

Somehow my ex boyfriend must have looked through my mobile phone and found a text message where I wrote to a guy from the disco about how cool the last night was. So he knew that I had cheated on him. But what happened next was really awesome, I don't know what he was thinking. Does he really know me soooo badly and think this is revenge for me? I felt a bit sorry for him, I'm sure he had a different plan in mind. But well, that's what happens when you think you have to play with me. What do you think, did I mind the revenge or did I even enjoy it???