As wat many said here, start of wif frens... be more natural
like... whenever U see her, ask how she been, how's da lab &
such... dun pop da topic like, "Y never sms?". Dun even try to ask
for her no. again... slowly build up... if U can approach her nice
& easy... (as FRIENDS) then even initially she had 0% interest
in U... time WILL change.
But of coz... wat I said is only a suggestion... U can DON'T
follow... Its yr choice, man. 