We didn't have any discussion about specific boundaries.

It has come up only in my worries about doing something wrong; she reassures me if a boundary gets crossed we'll talk about it.

A previous T stated emphatically in one of the first few sessions, and in response to nothing.. that we would never be friends no matter how much time since therapy had ended, we would never socialize, go to lunch, etc. Turned out she had a client who very much wanted that and repeatedly asked for it. What it had to do with me I have no idea; I suspect it was about her, but I didn't stick around there too long to find out.