A Peril of Being On-Line

I was at the gym the night before last. Wasn't really up for a vigorous work out, but did 20 min on the elliptical then went to the mats to stretch and do floor exercises. So, there I am stretching, doing crunches, whatever and the guy next to me looks over, points and says "XXXX" (the screen name I use on my match.com profile). I look back, puzzled. He repeats, and I slowly acknowledge, that yes, it is me. He reassures me that he hasn't contacted me, but did recognize me. Trying to be polite, I ask what's his name. He refuses to answer, and said it would be mysterious or something that way. O-k-a-y.... When I returned home, I looked him up. I shot him a "found you" message. He replied, but I didn't. Maybe I'll see him at the gym again, maybe not. He didn't creep me out, but the experience was a bit surprising (and that's being very understated.)