Please Help!

I'm 13 and bi but I've only come out to all of you here on eve. I have a crush on my closest friend but I'm pretty sure she's straight... Although... She never talks about liking any  boys... But then again she never talks about liking any girls either. Can any of y'all give me advice? I would be completely devastated if she rejected me then stopped hanging out with me. She's perfectly fine with LGBTQs though.