Aiyo... must go for it lo...
If kanna rejected at least you tell yourself you tried your best
liao ... no regrets right ?
The worst thing is to miss chance and few years later think back
and wonder what might well happen if you ask her that
time.
Slowly and step by step is the major key pal, once you rush...
that's it.
when in lecture give her eye contact lo... then when she look
back then give a warm smile and nod... after few times then can say
hi naturally.
Erm... maybe you want to see if she is wearing any rings
first... :D