I have had one provider who ended up a close friend - a friendship that came to fruition about 2005. Then there was the girl we had enjoyed some 2-girl sessions with who was not in the friend circle thereof. As Jane Doe (as I shall name her) and I got close as good friends, and her 2-girl bud Jill Doe (the other one) went off to pursue her degree more energetically and stopped providing and hence we lost touch with Jill.
Fast forward to 2008 at the Galleria. Jane Doe is out with her fiance, me, my SO and we're Christmas Shopping. Somewhere around the Starbucks on the upper level, here pops over Jill Doe, who was placing the order, and myself and Jane were getting our drinks for our group. We did not see her, but Jill saunters over, addresses myself and Jane loudly with a "wow, you guys spending the day together? that's good income for you, (addresses her by provider name)."
The looks on our faces I think spoke volumes, and she realized that we had more drinks than for two, and she froze when she saw the ring on Jane Doe's hand. Luckily, the crowds muffled her voice enough and as a whole, our group was on the other side from where we pick the drinks up. We politely explained she needed to use her inside voice, and we went over to the little milk station and quiet-talked to her.
She seemed quite offended. Anyway, she apparently was rabidly jealous of the friendship, and got rather ugly with us for a while. I honestly thought she was going to blow the lid off of everything.