The most likely scenario, frankly, is that your friend can read you like a book but prefers to ignore your crush.

In sixth grade, your idea of a friend was the person who went up to Nicky or Susan, your new crush, and asked them to dance with you, so that if they said "no", you wouldn't have to be embarrassed.

A nameless friend of Sally's appears only when the story requires some hurried exposition (" Sally, don't get a crush on your boss ").