Well then, I will tell you what I told another member. I hate to be so negative but it is the only example that may make you want to tell her. ^.^
What if she *Gasp I feel negative* died? *Deep breath* Would you rather want her to die wondering if you liked her or not, or knowing you cared? That's what I think, when my best friend told Michael I loved him I was a bit mad, but later I thanked her... Don't worry about her saying No, if she did she just isn't the one! Remember every time one door closes another door opens, you may have to walk down the hall for a bit to get to it and test a few knobs to see if they are locked but you will find the right door eventually!
Being a girl myself I know what it's like, it's more than likely she likes you... Maybe even have a friend tell her eh? What bad can it do? xD
Crowfrost