Most Helpful Guy
Well... First off. You're gonna hurt his feelings anyway you look at it. So the best thing is to just tell him how it is. Don't give him a bunch of positives or explain how great of a guy you think he is, and then say you don't like him... He's gonna wonder why. Don't give him anymore reason to hope for something in the future... However he probably will anyways.
In all honesty, you're probably gonna have to stop talking entirely. If he truly likes you for you, he's never gonna get over you if you stay friends.
Second... He's your best friend! You must like him to some degree. lol. What's keeping you from giving him the chance? Just because you don't find yourself LUSTING after him, doesn't mean you couldn't LOVE him. He may not be someone worth your infatuation, but infatuation/lust and love are totally different things.
It's all there for you to explore, if you have the courage to take a chance on him, like he did for you. Love can make or break the best of friendships... Consider what/how you REALLY think/feel for him deep down.
If you need any more advice, just ask! :)0THIS IS NOT RELEVANT ANYMORE