Im ready to tell her I'm bi...?

so I am ready to tell my best friend that I am biual. I know that I am and I'm not afraid of it. The issue is, her and I used to be close like that, but then she said we had to stop. I think its becauseshe is a very strong christian. I still love her. I want to be with her. But she told me she has a crush on this guy. I'm really worried that when I tell her, she'll ask who I like and it would be way too awkward to say it's her. What should I do??? She's keeping me up at nite. I flunked a math test cause she was on my mind. I really love her. How do I do this???