My T has never talked about attachment as such - thankfully he has never brought up attachment theory and types of attachment. I have told him about my feelings about him, which are varied but in general positive. It has been very difficult for me to do, but the outcome has been entirely positive. Since therapy is the only place where it is possible for me to discuss my feelings, positive or negative, for the other person in the room, it is kind of a nice experience. My T's response has been validating, respectful and interested.