Well, I finally found out who the anonymous goof-ball is that's been leaving tantalizing comments alluding to a shared past. It was one of my original suspects, the one i dismissed on the grounds that the grammar and punctuation in his comments was too good, and i would have expected more internet/texting-style shorthand from this individual.
He's a great guy with whom I was friends throughout high school (even "dated" for a short time, if you can call it that. I don't think we ever kissed, but we saw a few Disney films together over the summer and had some nice picnics.)
He took me to the homecoming dance, um, Freshman year? I think it was Freshman year. I remember that I was wearing a red dress when every single other girl in the school was wearing black velvet that year, and both his parents and one of his brothers were working as chaperones, and they spaced themselves strategically around the gym so we were never out of sight of one of them. I have never felt so conspicuous in my entire life.
Now he's living and working in Virginia with his wife and 2 kids, and seems to be well and happy, and that is good. We haven't spoken in some years, but it's nice to get back in touch. For a long time after high school I was really bitter about the way I was treated by my classmates (the girls were almost universally bitchy, snotty, petty, shallow, shrill, and two-faced, and most of the guys could have put "sexual harassment" as their #1 extra-curricular activity) and deliberately severed all connections with that life. Mostly now I'm over that chip (mostly), and getting back in touch doesn't seem to be dredging up the awful memories I thought it would. So that's good.