Yes, it's happened to me before. I remember I broke up with my boyfriend while I was at work. It was at the tail end of me getting off for the night so the emotions were extremely raw and I just a wreck. I was crying on the train ride home. There was a woman who saw how upset I was and asked what was wrong and if she could help in any way. Of course, I played it off and told her I was fine but I really did appreciate her concern and compassion. She even moved to sit next to me and just keep telling me that whatever it is, it'll be okay. Almost the same thing happened in reverse. I saw a woman crying on the train once too and wanted to go over and say something to her, but she got off before I could.