My David Blaine moment

After catching a movie, my date and I decided to get dessert at a restaurant she picked at the spur of the moment.

After we were seated at a table, I turned to her and said, "My crystal ball tells me that in a minute or so, a high school classmate of mine will be walking by."

She responded with a puzzled look, and sure enough, seconds later, my high school classmate named John walked by. I hollered, "John! Remember me from Uni High? David Cho?"

John looked startled, but immediately recognized me. "David!, how the heck are ya?" We exchanged a light (very light, mind you) hug, spent a few minutes catching up, and traded contact information to further catch up later.

By now, my date's jaw had dropped on the floor. "I don't believe you. You set this whole thing up, didn't you?"

Some facts to consider:

• She, not I, picked the restaurant at the spur of the moment. No, I did not manipulate her into picking that restaurant. It was 100% her choice.
  
• I later showed her John's photo in my high school yearbook (Where did that yearbook go?) to prove that he was indeed my HS classmate.
  
• Our table was in a partitioned area, so we couldn't see much of the restaurant. John did not become visible to where we were sitting until he was right by the table.
  

Any other questions?

How did I do it? Post your guesses.

The Prizes for Winners

The first person to guess it right gets a dinner date with me.

The second person to guess it right gets two dinner dates with me.

And so on and so forth...