Honestly, I don't think this is about his responses to you. You repeatedly say you don't trust people to be real with you. You even laugh at your friend when she says she cares. No matter what your therapist did or how he responded, your default was always going to be that he didn't care because that is your armor.

He can't fix this for you because until you choose to trust other people, this will always be your response. He could have fallen on his knees crying and professing his love to you, and I truly believe you would have still faulted him in some way as not being real (and it would have been out of his personal character probably so it actually would have been fake).

At this point, you have to decide that the sky is actually blue but you are determined, no matter what anyone says to you, to argue that it it green. Until you see and trust the reality, no one can help you with that but yourself.