What is missed call from ex no message?

As an AI language model, I cannot speculate about the reason why someone did not leave a message after a missed call. There could be various reasons as to why someone did not leave a message. Perhaps the person accidentally dialed the number, or they simply wanted to gauge if the person they called would call back. It is also possible that the person may have some unresolved feelings towards their ex-partner and wanted to know if they would reciprocate the gesture by calling back. However, without additional information, it is impossible to know what the person's motives were behind the missed call.