Hi all, this is my first post in lowyat forum. 

Recently, I found that my gf behave differently sometime, especially when she is in depression (feeling sad, negative thinking).
After some research on the Internet, I suspect my gf got Dissociative identity disorder which might caused by something that happened in the past.

When she's tired and sleep for 1~2min, her second personality will pop out. When she woke up (means the 2nd personality slept), she can't remember what she did and just know she is woke up from her sleep.

So, do anyone have the same problem or it happened to your friends and family? I'm in doubt whether I should tell her about this, because she don't know anything about the 2nd personality, but the 2nd personality does.