I don't know that this new voice is an alter. I don't have the sensation of a presence, like someone standing very close to me, the way I do most of the time with most of my alters. On the other hand, it is early days yet. Could this be an internal self helper (ISH)? Or something else? Many religions have a doctrine of spiritual guidance that involves asking questions and receiving answers. Time will tell.
It is indeed very distressing to feel such a strong attachment to someone I hardly know, who says he wants nothing to do with me. Usually I would not get attached and even if I were attached, usually when someone rejects me that's it, I am done with them. I just walk away. This one is so different, though. Even now I don't feel he has rejected me. He has said words to that effect but the feeling that came with them said something else. From the start, even before I was aware of my condition I had that uncanny feeling about him, that he was communicating in multiple channels messages that were mutually inconsistent.