I've fallen in love with my best friend who's convinced i'm 100% gay.

I met my best friend, Alice, at work a few months ago. I'm not the most attractive guy, but genetics treated me pretty well. I have long brown hair down past my shoulders, and a tall lean body with relatively attractive facial features. She's about 5' 6" with dark black hair, a couple piercings, and a perfect amount of chub on her face and belly. When we started working together, I guess she had a little crush on me, but was quickly informed by another that I'm gay, which at the time, I was convinced I was. We started hanging out a lot and quickly became best friends. I fulfilled all the duties of a gay boyfriend, being a cuddle buddy, listening super hard, etc. Having never felt so comfortable with another person before, I told her ALL my secrets: What kind of porn I prefer, my crossdressing habit, and all my other dark secrets, which she smiled and shrugged at like it was no big deal. A couple months later when she was cleaning out her closet (literally), she asked me if I wanted to go through the clothes she was getting rid of to see if I wanted anything, which I excitedly accepted without a second thought. She also started sharing secrets with me, such as her many boy toys and the many fetishes she has. This behavior persisted until a couple weeks ago. I had a fantasy dream about us, and it was spectacular. I haven't been able to think about anything but her for 14 consecutive days, which sucks cause I have classes to focus on. Now when she tells me about her plans to hook up on the weekend I feel a knife in my heart. I was never jealous before, and I can't help the way I feel for her, but something about telling the girl who has given me and seen me in clothes from her closet, knows I shave my whole body, and tells me about every penis she's seen makes me nervous to say anything at all. We both love each other a lot, but the overwhelming fear of losing her forever because my heart stepped over a line I wish it hadn't freezes me whenever I want to open my mouth. I made a "date" with her in a couple days where we plan on getting trashed and scheduling a trip for a music festival in summer, but I have other intentions for that night... So two questions: Does planning on getting her drunk and talking to her/getting her into bed make me a f*ck boy? And how could I go about delivering such a message? I'm speechless...