I've had an experience that somewhat falls into this category. I previously lived in another city before moving to Phoenix and before I started hobbying. Ended up being sent on a consulting assignment back to this previous city about two years ago. I joined a reputable local board and went to a mixer where I bonded with another hobbyist who eventually recommended a somewhat UTR provider after we had hung out a few times.

I ended up contacting her with his reference and after a few weeks of our schedules not jiving, we finally made an appointment at her incall. I showed up at her incall and she opened the door. Standing before me was the ex-girlfriend of one of my best friends. Both of us were pretty floored as we both remembered each other from our lives "before the hobby". We were to able move past the fact we knew each other and have some wine. After a few glasses of wine, she confessed to me that she always had a crush on me and I admitted the same to her. It looked like all things were going well.....

Until she mentioned that she had a rule that she didn't mix business with pleasure and that she didn't provide to her own acquintances from her "real" life. I was hoping that meant that I would be able to have a non-PFP/booty call arrangement since she had a crush on me but alas she stuck to her rule which I respected. We continued to hang out while I consulted in town as friends (unfortunately not with benefits) and kept in contact for a while until she moved back to her native Canada and got married. Although we remained friends, she asked that I didn't contact her again after she was married because even though she trusted me as a friend, she was cutting off all contacts from the hobby. Since I was part of the hobby, I had to be included. I respected her wishes and haven't spoken to her since.