It's all right.
I think it's overall really choppy; most of your sentences are really short. Could use more descriptive words, too. And when you describe, don't tell - show. I see lots of spots where you're just throwing out the description out there, such as when she's describing her room. Also, it all feels a bit unemotional to me. Try throwing in things that answer questions like, "How does Aimee feel about this?" I know you say things like Aimee likes Zach and stuff, but go in depth; don't just blandly state that Aimee likes Zach.
One more thing - A lot of your paragraphs are huge, then you have a few one-liners, then another huge paragraph. Try to find places where you can split up the paragraph so that it's easier for the reader to read. If you keep the paragraphs like the way you have it now, the reader will tend to just skip over the entire passage. I know I do, whenever I encounter a large paragraph.
However, I've just been covering negative things about the story. I can really see where you got your inspiration [you belong with me]. It's a very cute story line, and I like the fact that you didn't keep it exactly like the music video.
Overall, it needs a little bit of work, but with a little bit of fixing here and there, I'm sure it'll turn into something brilliant. ;D