Does my best friend of 3 years like me?

So just today my best friend who I tell basically everything, she decides to tell me about a dream she had of me. I can't decide if this girl is crushin on me or if she is just being friendly. Our relationship, before today, has never crossed the lines of "each other". We usta hang out but we are just best friend, nothing more. I just dont know what to get from all this. She is a cute girl though, I dont think I would mind dating her. I just dont want to jeporadize our awesome frienship. Help me make sense of this please.