3 Weeks of crush

This story was told by the main character through out her last 3 week of her high school year knowing if she don't tell her crush how she feels, she might as well never see him again since he's moving away after Highschool.
The first week she will be enjoying the rest of school days with her lazyness and airhead problem. Then secound week is mostly the same accept thinking hardly so time will be going fast, also there will be a schooltrip. Week 3, she tried to ask him to prom that saturday, the story might feel like it just change into a different story to some of you