IMO your T should have taken their emotions and reactions to supervision... that is excellent fodder for supervision.
My T and I have an extremely strong relationship that does often feel like a very close friendship... except that it is confined to set therapeutic times, places and boundaries. We don’t go off meeting in coffe houses or visiting each others homes. We have a lot of common interests and we often share about them. I know a great deal of his family, hobbies and life outside the office. All of this has furthered my healing without a doubt. Some clients need their T to be a Dr in a lab coat that prescribes interventions to fix their emotional state. I need a relational human being that has set this time aside to join with me, sometimes guiding me, on this journey towards greater wholeness. Keeping with the journey theme it is like going on a long hike up a mountain... sometimes the trail is rough and you focus only on continuing up the mountain. Sometimes the ruggedness opens into a beautiful meadow with a cool breeze and you chat, perhaps pausing a moment to enjoy that spot on the journey... but you are still on the trail, still climbing the mountain. To say that such a beautiful rapport between therapist and client is unboundaried or detrimental is garbage.
My T often reminds me that the therapy is the relationship.