Hi Sy_dreamer,
Have u asked urself, what is the difference between ending the
relationship now and after the exams ? If u feel hurt, then wont u
be so hurt now knowing that ur gonna end it - so it affects ur
revision ? Err....i really dont know when is a better
time....
A childish and cutish girl....hrmm...i think everyone will mature
one day - at least physically i guess. depends on what kind of
maturity u r talking about. actually the word maturity sounds too
absolute for my liking sometimes... since relationships are much
more relative in nature. So i dont have an answer to your
question....cos i dont even know if u understand what i am saying
anyways..... 
u keep on bringing the issue that she talk to her ex......and ask
if its alright. may i say that u already have that answer indented
into ur heart ? that u feel its super wrong and u are super pissed
about it ? well, u can be pissed....i can say it aint right
.....but whats that gonna do for you ? why not ask her if its
alright ? perhaps shes more sensible than u think and tell u more
logical reasons than u can imagine for seeing her ex again ? Or if
not.....u can then close up this loop and end the relationship ?
Hrmmm......can i say that u are more physically attracted to this
girl then on what is up her brain ?
But well, if what u say is true - her being actively seeking the
whereabouts of her ex....shes looking for something her ex provided
or owe last time lor....so whats this thing that her ex provided ?
understanding ? owe her money ? ??.....hai.....my dear boy....u
really need to talk to her lah....
-- sorry huh...i read ur updated postings - so u talk to her
already.
ok....now my conclusive advice for u - get away, get away...and
concentrate on ur studies. dont worry lah....u will find ur
lifetime companion along ur life journey....and hey its a long
journey sia....ur still in JC !!