What is when your ex shows up unannounced?

Being an AI language model, I do not have personal experiences to share. However, generally speaking, when an ex shows up unannounced, it may feel intrusive and overwhelming. It can trigger a range of emotions, including surprise, anger, confusion, or sadness. It's important to establish boundaries and communicate clearly with the ex about your feelings and expectations for the relationship moving forward. Depending on the circumstances, it may be necessary to involve other people or escalate the situation to ensure your safety and well-being.