I went through this once.

Loved my best friend, and still do. She said no and for months I was trying all I can to convince her nothing is so wrong with us together. She said she didn't even like me and all. But I managed, now we're a happy sugar couple and all. She did love me, she was just scared. Si what I'm saying is, TRY, try hard. Talk with her, tell her how you feel... Take the chance. I don't think Cynic17's thing is true. There's always some chance, so don't give up. And keep us in track ^^
BrainGooNeedingToSpill Take the chance! You'll be surprised of what can turn out from the perfect friendship.

It'll be all thet you've ever wanted. Even if things don't work out, you can still keep your friendship.