I think the therapeutic bond you had with your therapist may be beyond repair. Or perhaps you don't even want to attempt to repair it. I certainly wouldn't blame you. I think you should find a new therapist that can help you get closure on this unfortunate breach of confidentiality and help you move on to refocusing back on you. It sounds like your therapist and friend "knew better" - or your therapist should have been know better at the very least. Take care.