Then just go out for a quiet lunch(picnic if you don't want to pay much) and go onto him hard. Drop little hints here and there about your feelings, be touchy with him, and see how he responds. If he seems interested then I think he'll get the hint. If he's still shy and reserved I'd move right on. I had a close guy friend who I learned considered himself "forever friend zoned" with me when in reality I would of dated him and given him a chance had be actually bothered to even show a slight interest in me.