Usually we have to be very patience on them, understanding is the key of to make sure your relationship with them are going well. There are a lot of aspects in dealing with people like this. In a workplace/school, friends and among your family members. People with Bipolar Disorder seldom think that others have feeling too, they are selfish, ego and easier to get angry ( Honest opinion) .They can't see their faults but often see others are the 'Bad guys'. Once they are corrected by people who are sincerely tell them what is wrong, they will probably hold grudges or build hatred on them until they realized their weak points. People who are mentioned in responsible to love them unconditionally are their family members and close friends.