I really like the concept of this story, and I think you really nailed everyone's personalities in each section. I especially felt like you caught Regina's character, with her pretending to be drunk and then making a comment about what great friends they were. I could just see her saying that.
I also liked this line: "Cady loves this feeling, loves Aaron, loves love." Because in high school, every girl loves being in love. :)
Great job. I really enjoyed reading it.