well, look at it in a bigger picture lor.
Zhuo4 ren2 yao4 kan4 kai1 yi4 dian3.
Instead of questioning on gals for doing that, should understand
that they've got feelings too. See, we guyz go to NS & serve
those bullshits over there, while the gals stay at home talk to
friends. Do u think she'll wait for u? Please lar, it's rare these
days.
Why leh? Because, many gals nowadays they love to have fun. They
feel lonely easily, and they need security. Moreover, she's young,
and u know wad? Many young people like us are impatient, so, ask u
again... do you think she'll wait? Or should i ask, do u think u
can wait for her? Think about it. 
