Stranger

There's this man that I pass on the sidewalk on Tuesdays and Thursdays that I always notice for some reason, I've started using him to gauge whether I'll be late or early to my next class (by where we meet along the way), and today he looked right at me when we met, I smiled because I guess I generally smile when people catch me looking at them, but I can't help feeling like he's ruined our Semiweekly Stranger Encounter by making it personal...