Also, TS seems to already know the girl, just don't know how to approach the subject
okie... if this is the case, usually jus keep asking her out, text her everyday, almost everyday la.. females like to test endurance! obviously she will know he is koa-ing her.
the longer he last (prolly one month later should have result) she will get hooked!!
if her replies are one word, 3 words, take very long, no reply.. den he can really move on, no need wait one month.
there is also another scenario, he keep shower her with attention den suddenly stopped. den she will feel something's not right and initiate contact... basically u water the plant everyday she will bloom, u stopped watering, she will dry up and dieeee
ehhh am I giving out trade secret?! XD
disclaimer: above method has a 50% chance of success and 50% chance of failure. try at your own risk!