Looks like u both r mature enough to talk over this matter.U might have led him believe that u r interested too by your action,behaviour whatever.So,when u meet him next time instead of getting nervous ,be clear to him,tell him what u expect in this relationship. Don't just give him any hope by not saying anything .It might be worse if u guys just continue doing this with clouds in your mind.Just be clear to each other,and enjoy your good friendship.If he wants more than friendship and u don't just explain that to him.If he keeps bugging u even then, drop that friendship.Grow up.act mature .u r not a teenager!