leave her, you must, it looks like shes ruining your life. yes you feel bad, but you must get over that and numb your feelings toward her. Stop feeling bad for a girl who is ruining your life. its hard to be with someone who is bipolar, with all the mood swings and everything, dont feel sorry, once she takes her pills and gets better, youll be happy that shes no longer with you, and youll feel a lot better without her too.