Should I play the jerk card with my ex?

My ex broke up our 2 year relationship last month, she deleted me off facebook and her friends did as well. I seen she gave away some of my flannels to her retard friend in one of her mobile uploads and I got upset. I messaged her today asking how everything was and didn't get a response. I messaged her again and she responded with " we are broken up, these messages are a little annoying ". She told me when we broke up IN TIME we can be friend but I am not going to sit around and wait on that like a little sissy. I already met a new girl and she is into me and always texting me. I am not over my ex completely but I got upset and decided to play the card instead of being caring and understanding, because it's obvious she isn't doing the same. So let me know if I am wrong doing this, but chances are she will be back once she sees me with this new girl. By the way, my ex girlfriend is unconfident and makes herself look pretty on facebook than in real life, looks are kind of deceiving. I was a good boyfriend to her and always was there for her and for me to hear all this makes me furious and feel used and wasted my time. She never had friends in high school but now that she is out of it she has like 3 friends and I figured that is one of the reasons because she never felt what it's like to have friends and go out. So give me some info on how I should be and what will make her come back to me and regret breaking it off