In a non-close relationship, no one has any idea because I force myself in every way to not show any abnormalities. Yes, they've seen me jump out of my skin but that's shrugged off so easy by everyone that I don't get too caught up in it. I don't live in an area of the state where showing "weakness" is a good idea. If you do, something will always happen. Therefore, only people I trust know about my condition. On top of that, I'm just really private. So, to answer your question, I guess I came to that realization the moment my PTSD symptoms came into my life.