I dunno...the whole point of therapists not friending clients on Facebook is so that both therapist and client maintain some privacy. That's already been sacrificed here because of mutual friends on there, but if I were the therapist I would not indicate that I was reading a client's Facebook posts. It would make me uncomfortable as a client.

It probably isn't that big a deal, but maybe you guys should talk about it - not just the feeling but the action. Should this be okay in future? Etc.

(This isn't aimed at anyone who's friends on FB with their therapist - just how I think.)