OK, this is long, so bear with me. I met this girl at a dance in April 2005, and since we didn't have any opportunities to see each other (her school is in Albany and mine is in northwestern CT; she lives in Japan and I in NJ), we had to keep in correspondence with her through email. I met her again at another dance at the beginning of this school year in September, and we hooked up. It was all going well until November, when she broke up with me and told me she wasn't going to be at the next dance at her school. I went to that dance and, lo and behold, there she was. I've been bitter about this ever since. It's been about 8 months. Is it normal to still be lingering on this issue?
You can waste a lot of time and energy pursuing someone who is just plain not interested anymore. Don't take the rejection personally. There are hundreds of thousands of people out there your age and single. Wouldn't you rather spend your time finding someone who is absolutely mesmerized by you? She exists.