It sounds like she wasn’t the one for you, and she has a lot more growing up to do. Anyone that shuns you away because you care too much is not worth your time. She was either not ready to settle down or you just weren’t the right match. I know that’s hard to hear, but just focus on the future and don’t look back! There are so many people out there, and with all the technology these days the world just gets smaller and smaller. Every time you think about her, force yourself to think about something else that makes you really happy. Things will get better in no time, and some other girl will catch your eye.