So one of my friends is acting, like this... but I don't what it could be.Shs will make you really happy support you,bring you places,get you presents & get you to really close/good friends.She would get you really close to her.She would then make would make you depressed,tell your secerts,make fun of you,& just be completely rude.She is also very manipulative, threatening to harm herself, or hurt people emotionally(IE:bullying them). Thought the whole relationship, she would just be very controlling. Never wanting me to be with anyone beside here. What could this be? Does she have a disorder?