Need help, is this bipolar?

ok so my best friend switches so much she is like Dr Jeckyl and Mr Hyde. She has done this since we were children. One minute her and I will be buddy buddy and then the next minute she tells me everything that is wrong with me and why I amsuch a terrible person. Everytime some thing snaps in her head she beats me up with it. I get emotional abuse form hell from her. I am always wrong and always stupid. But when she needs me she expects me to be right therein a heart beat. When she is in a good mood we joke and have fun, but then this other side always comes out at me. She flares up and then takes the pain ofthe world out on me. I know she has a few problems as she was adopted and I know this bothers her. but why does she take itout on me? Why have eI turned into her beating stick? Does this sound like being bipolar? how she can go from one extremem to the other in the drop of a hat?

Bipolar has to do with being manic and depressed not mean and nice.

its the same thing, she attacks me when she gets depressed in her own life, I was not very clear. It is a clear mood swing cycle with her. she gets suicidal at times as well durring these cycles. She ahs been daignosed as manic depressive, but I think there is something more, I am on the ront so I see what happens. It is not so much mean and nice, it is seriously like she switches out into different person once in a while. Like her personality changes, along with her facial expressions. She has extremem highs and lows. She gets very very happy and then drops down to below ground level.

You a good friend because I would have drop her along time a go. She Bipolar she need help!!!

Manic depression is bipolar...
They just don't call it manic depression anymore, they call it bipolar disorder...