<human>: Hi

I'm 15 years old and live in Sweden. I'm also in love with this girl (let's call her F) and we are in the same class. I've known her for 3 years and we have barely talked. I'm the average guy, not really one of the "cool kids" and she's one of the "cool kids". But our class is great, because it doesn't really matter if you're one of the cool kids. 

The thing is that I pretty much fucked up my most important friendships so right now I'm really unpopular, if you can call it that, in my class. Nobody talks to me aside from the occasional "Hi".

Those friendships are another thing though and I just wanted to explain my social status I guess. Now for my status with F.
I love her more than anything, and I know it sounds weird considering I haven't really talked much to her but I know exactly how I feel and that's how it is. I fell in love with F a few months ago, some weeks after I asked her out to prom. She kindly said yes and all was well. But when I fell in love with her is when shit started going down. 

I almost can't talk to her. I always thought that when people said that you can freeze up and simply not talk when you are nervous was utter bullshit, but guess what? That's exactly how it is for me. I can't think of anything to talk about and when I come up with something I usually stutter and get sweaty and all that. I even have trouble talking to her on SMS. And I'm really nervous for the upcoming prom because I think it's gonna go terrible.

And I really want to hang out with her and become closer friends but how could I do that when I can't talk to her even? It would be easier to talk with her if we were alone but such an occasion would never happen.

Summarize the given text in a few sentences.
<bot>: I can't talk to the girl I'm in love with and we have an upcoming prom. I would like some advice for how to talk to her easier so that the prom won't be a fuck up.