Tho your friend might not take it well for you to intervene, it is very basic that a therapist is not supposed to do social things with a client because it causes transference. That is, therapists are supposed to maintain a professional distance from their clients so they can be objective and a guide or authority figure. Tho we can enjoy laughing with our therapist, etc, they are not our buddies and we are not supposed to think of them that way because we might take the advice of a buddy less seriously. I am astonished at how many people on these forums expect their therapists to be their friends.