Not exactly-but I once visited an sp who, after we spoke for a few mins., seemed to freeze and then she started asking me about people that I knew. Seems that when I mentioned which school course I was attending she realised that I probably knew her best male friend from her home town, and I did.
She was terrified that I would say something (though if she had not said anything how would I have known?-she was just so freaked out by such a close connection I guess) She proceeded to beg me not to say anything to our mutual friend and I reassured her that I would not.
This connection seemed to stimulate an already nice connection I had with her and we continued with one of the best sessions that I can remember in my life. She was quite open with me and we even kissed(DFK), which at the time(about 16-17 yrs ago)was quite rare for an sp.
I did keep my promise and her secret remained-at least by me-a secret. The only down side was that I kind of wanted to see her again and this never happened. I think it was just too close a call for her and that she left the business.