Turns out, it was Spencer, a man I've missed greatly in my life. He wasn't my high school guidance counselor, exactly. He was the student activities coordinator at my high school, and was a wonderful person to be around. He did a lot to keep me sane (such as I was) my last two years of high school. Turns out he'd been talking to phil_ji (who was my high school librarian (hi, Phil!)), and I came up, and he looked me up.
It was great talking to him again, and catching up on some news from home. Combined with the wonderful pictures phil_ji sent me of home, I'm feeling a bit less isolated from home. :)
What a great surprise. Yay!