Have I told you how I'm the crazy ex-girlfriend?
What makes you think that you're crazy?
Am I not the crazy ex-girlfriend? I'm definitely that.
While emotions can run high after a breakup, it isn't appropriate to continue to interfere with an ex's personal life. You should move on from any involvement with your ex, especially if you consider your own actions to be "crazy". If you continue having difficulty regulating your emotions, you should contact a therapist to learn better coping strategies and behavior after experiencing a breakup.
It's not easy being dumped.
You haven't told me about any behavior that was inappropriate. Just because your ex decided you two weren't a good match doesn't mean there's anything wrong with you. Cheer up, young people break up all the time before meeting the love of their lives.