I realised I had a Facebook message in my requests today. I opened it and it was from “Facebook user”. There was no profile photo and no way to open their profile. There were two messages about an hour apart, they were greyed out and it said the messages had been unsent. When I clicked out of the chat, there was no way to open it again. Is there some kind of technical secret way to find out who it was? I have some anxiety around this as there are people from my past who have been out to cause me trouble before.