I have a friend who would go to the ends of the earth for me, and I her. But there is one thing she does and I don't understand it from a personality standpoint and would like to better handle the situation.

She frequently likes to portray, publicly, that she is a private individual. But she really is not since she shares so many of her life stories, at length, with just about anyone. However, oftentimes, I will say something out loud in front of others (ex: are you ready to go?) and she will give me the shut up look, because others don't know. I never know what I can say to her in front of others; and just when I think I'm doing good and don't say anything that I believe is encroaching on her privacy, she will give me the look and shush me.

Is this passive aggressive behavior? Why does a person do this?