<human>: I met a girl that I am really fond of and we have been becoming really good friends over the past year. I realized that we got along really well and I went out of my way to foster the friendship because I think she's pretty awesome. Over the past few months, however, I started noticing that my feelings about her were different than I normally feel for friends... I was feeling attracted to her. I ignored the feelings, I wrote it off. I thought I was just excited about having such a cool friend.

But in the past few weeks, the feelings have become so intense. I have always considered myself to be straight and I have never dated a woman, but I have for some reason, completely out of the blue, totally fallen for this girl. I am very surprised and confused about this, and I'm pretty upset by it. I would not choose this if I could control it. It's hard to be around her now, especially since she's in a relationship with a great guy. She has no history of being attracted to women as far as I am aware. But I can't get her out of my head, I can't stop thinking about it. It's driving me insane.

I am simultaneously upset that this is even happening, upset that it probably can't ever become anything, and worried very much about hurting the friendship. And I'm confused about what this means about me.... I mean, I still consider myself straight, but this doesn't exactly fit into that. Does it?

I have absolutely no idea what to do. Even though I know there is no chance, I feel so compelled to try to get closer to her. I just want it so badly. The idea of distancing myself from her is painful, and I don't want to, but I don't see what else I can do.

Summarize the given text in a few sentences.
<bot>: I thought I was straight, but I seem to have totally fallen for my good friend who is a straight girl. What the hell do I do?