Very slowly, haha. Um, well first I described what a flashback felt like, what it did to me and so on. Then I explained what I know triggers me and how sometimes it seems like nothing does but I still get sent into my nightmare. My fiance did a lot of personal research on his own, come to find out, and figured out what to do when I'm in one, how to act etc.. He also developed a lot of patience with me, which is something special. I'm a handful who periodically tries to convince him he should leave me, every couple of months (that's how he knows it's bad for me).
Don't know if I really answered your question fully here. If you need more specific information go ahead and ask.