It sounds like you do need help figuring out the differing boundaries between self, family, friend, acquaintance, and doctors. There is a certain level of respect and love with all of the categories but each is different. People with borderline see and live in "black and white" type thinking so it's all or nothing. We can learn to retrain that thinking but it takes a lot of hard work. It sounds like he wants to help you with that. Please let him.