Sadly, despite my best efforts, I've never seen anyone I've known.
There's a married woman I know, lives not too far from me, that told me her husband shared her images on and amateur share site and told me the username he used. I searched but it looked like he'd deleted his account.
I know my wife has had "male friends" during our time together and I'd love to find photo's of her. She told me they never took photo's... After all this time, I'm beginning to believe her.