Hmmm... the reason she gives for wanting to go separate ways
with you already hints her personality and her uh, view towards
relationships. I guess. "we cannot communicate" if she was serious
about the relationship, she would have made an effort to try and
work out the differences with you instead of giving up so
easily...
I think when we're in our teens... maybe try not to expect too much
from relationships lah. Anyway, you've got a long way ahead of
you... and even though I am a girl myself I must admit that alot of
girls go into relationships nowadays for the sake of having a
boyfriend or similar reasons. For a girl like your ex... I hope
it's not rude to say this about her, but it's not worth getting all
worked up over such a... should i say... fickle minded?
person...
Cheer up. 
