Most Helpful Guy
Caught him staring, always greets you with a smile, he probably likes you. Ask him about it over coffee together or something. If you are attracted, of course.
Most Helpful Girl
Stalking... is not always a bad thing
and sometimes coincidences happen like a machine gun then gone for months, can be either a glad or unhappy thing.
Here's a guy that has nothing on the ball as to social gal skills that feels happy when around you, even might consider you a trophy girlfriend potential, if he only knew what to do... instead of leaving you clueless.