I think the first step would be to find someone somewhere that can give you the emotional support you sorely need right now. Next when you feel a little more stable and clear headed discuss your concerns honestly with your therapist and express your concerns if he continues to be cold and aloof and unfeeling then find a different therapist. Due to my lack of experience with BPD there isn't much I can suggest apart from these two things that seem to be the most logical. I hope what little I have to offer is helpful. Good Luck