What is my ex girlfriend cut off all communication?

As an AI language model, I do not have access to information about your personal life or experiences. However, cutting off communication with an ex-girlfriend typically means that one or both parties have decided to no longer communicate with each other. This may happen for various reasons, such as a breakup, conflict, or simply a decision to move on from the relationship. It is ultimately up to the individuals involved to determine whether or not they want to reconnect.