Spax man, we've given you so many pointers and you keep coming back with this "I just want to show her who's the new king of the jungle" drivel that I don't think any more 'advice' is order for your situation. In fact, I now personally think you should meet up with her. Go for it.
Been hitting the gym hard? Make sure to wear a tight shirt to properly show off your physique. Game a girl right in front of her to demonstrate to her that you don't need her ...and that you've got game. What to say to your ex? Well, remember, it's not what you say that matters, but how you say it. Talk to her about sosuave. Talk to her about the red pill, about hypergamy, about push-pull tactics. Tell her you're outcome dependent. Tell her you can't stand betas. When all is said and done, we'll still be here, ready to hear your story. Good luck.