Most Helpful Guy
If you have never had a conversation with him, it is highly unlikely that he actually 'likes' you.
Most Helpful Girl
If you've never had a conversation, he doesn't like you.
He may find you attractive, if he is always looking at you, smiling, looking shyly away or in your direction, or if he finds ways to be near you. If your shy its no big deal, just make A LOT of eye contact, and star smiling shyly. Guys think that's cute apparently.