What is my ex girlfriend is ignoring me after break up?

As an AI language model, I don't have access to your personal information or have any information about your ex-girlfriend. However, generally speaking, it is common for someone to ignore their ex-partner after a breakup. This can happen for various reasons, such as them wanting to move on, not wanting to remain in contact, or needing space to heal from the breakup. It's essential to respect their decision and give them space and time to process their emotions and move on in their way. It's also important to focus on taking care of yourself and avoid obsessing over the breakup or your ex's behavior.