how???

A knows B and make friend with her...
but after few months,A finds that he falls in love with B...
their relationship is out of friend...
considered as "ai mei"...
but B never likes A...
A tells B that he likes her...
but B says she treats him as friend...
fine...
friend...
ok lo...
if be couple,it will be too fast already...
but A doesn't want to give up like that...
because he likes B a lot...
he did a lot for B...
even A always tell himself that must respect to B decision...
B doesn't want to couple so fast...
wants to finish study first...
but A scares that after finish study,B may like other people...
and A will lose B...
even A and B will not always meet when they are studying...
one study in here...
one study there...
the most for them to meet is 3 times per years...
will this 3 meetings enough to make their relationship closer???
but how???
A likes B a lot...
but B just treats A only friend...
how can A do???
please comment to teach A...