I'm in love with my best friend and she has no idea
Are you sure of her feelings toward you?
No I'm sure, she never showed any signs toward me and she is just too shy to come forward to me.
If your friend doesn't tell you how she feels and you hide your feelings from her, you are both creating a problem in your relationship. Be honest with each other and get your feelings out into the open.
What about our friendship?
If you're really good friends, your friendship should be able to survive an open and honest conversation about your feelings. As long as you don't have any expectations besides honesty and respect her boundaries, it shouldn't harm the relationship.