Tiny rabbit,

experiencing that feeling is something very valuable, especially if you never felt it when you were a child. it shows the good relationship you have with your T and that you are able to connect with him. I see it as a breakthrough and a way of healing (in my situation and experience)
In a time when things were not going so well with me, my T sent me a message for the nighty to wish me a good night. I told her later that it gave me a good feeling that I was not alone in that period. Then she said: "I do not always send a message in real, but in my mind I do it often" for the first time I could feel that someone cared about me and that I am not alone.

Its a wonderfull when things like that happen in therapy.

Liefs,
Bloem