What is my ex girlfriend texted me out of the blue?

As an AI language model, I don't have any access to your personal information or experiences, so I cannot provide specific information about your ex-girlfriend texting you out of the blue. However, generally, if an ex-girlfriend texts you out of the blue, it could mean a number of things. It could mean that she simply wants to reconnect and catch up, or she may want to address unresolved issues. On the other hand, it could also be a sign that she's interested in getting back together. The only way to know for sure is to have an open and honest conversation with her.