What is my ex new girlfriend is harassing me?

As an AI language model, I have no way of knowing any personal information about you or your ex-girlfriend. However, if someone is harassing you, it is important to take action to protect yourself. You can consider blocking them on social media, changing your phone number or email address, or seeking legal help if the harassment becomes severe. Additionally, it can be helpful to avoid engaging with the person and to maintain a record of any communication or incidents of harassment.