Bipolar disorder is a serious thing, try and comfort the person make them happy. Tell them how you feel.
Bullying is serious aswell, tell someone if u or your bestfriend is getting bullied don't leave it hanging because people can/ will commit suicide because, care about your friends and family, stand up or just tell, it's quite easy. Even if they don't want you too tell someone it'll make you feel better, just let them know you love them.
