Listen, if you don't like him, you gotta tell him how you feel. If your too nervous, then there's other ways... over the phone, through MSN, or get a friend to do it. Personally, it'd be better off coming directly from you. And if you like this other guy, then GO FOR HIM. Don't waste your time on someone you don't care about, and don't lead him on pretending like you do. The longer you wait the worse things will turn out. Honestly though, you need to work on your confidence. It's natural to feel shy around someone, especially a guy your dating or like, but if you cant even say hi to him.... that's a little extreme. If you do go after the guy you actually like, make sure to be confident about it. Let him know how awesome you are, and don't like your shyness take away from that.