I am sorry you are having so much trouble with your family and friend relations. It was unclear from your email if you are in therapy and if you are being prescribed medicine for the bipolar II. If you are not in therapy and have not had a medication consultation I would strongly recommend finding a therapist and a psychiatrist who has experience in treating this condition. Being in the care of people who are trained to help can be an important step in coping with this.
On the good news side it sounds like you have some internal sense of when an episode is happening. This can give you options in dealing with your responses. I believe the strongest vehicle for learning what these options are is through group therapy. The find help tab at the top of this page can bring you to a person in your area that may be able to help. Often your local community mental health facility has an outpatient program where groups are available. In a group you will learn how to deal with your internal activation as well as how to come with feedback and confrontation from others. It can be a powerful source of support as you find your way.