It can be hard to love your best friend...He might just feel weird because you guys are such good friends and he wouldn't picture you as anything more. But that doesn't mean it would never ever work out - I fell in love with my best friend and I never told him because I didn't think he felt the same about me and I didn't want him to stop speaking to me because of it. But then he admitted to me that he had feelings for me, and it took me a whole month to tell him how I felt.
I never in my wildest dreams would have expected him to love me the way he does, but it happened, and we've been together for nearly five months and he's wonderful.
Just give your friend time and don't bring up the matter again unless he does - as someone else had said, in time he could very well realize that he loves you and he may pursue you.