I should add that this individual denies any wrongdoing/causing harm to someone and thinks they are fine. The chances of them seeking professional help/professional diagnosis is not likely. It isn't someone I know per se but more of someone i know through a friend of mine,that was emotionally cheated on by them. Although I can't say what they are because I am not a professional,i have noticed their behavior changing drastically in a short time and it's nothing but red flags. I can't say anything or bring it up because this individual will get angry at me,cause trouble,etc so I'm steering clear of trying to talk with them..