If the guy has never approached you to say he likes you or wants to take you out, why would you even think to say to him you don't care for him that way. What way? He hasn't said anything to you. Just continue to be respectful toward the guy and treat him the way you want to be treated, but you really don't have any concrete evidence he really likes you or want to take you out. He's shy, maybe that would be his reaction to most girls. Tell your parents what big news about the guy? The guy hasn't said anything to you.
Now if he gets up enough nerve to say something to you like he likes you and would like to take you out, then you let him know you don't want to mislead him on in thinking it can be more than friendship, and it may be better you didn't go out with him. Don't stop being respectful and try to keep a smile so you won't frighten this very shy boy. :o)