One tactic a guy uses to make the girl want him is to woo her
and then suddenly back off.
Supposedly drives the girls nuts and confuses them.
But the caveat here is that he must woo her first.
If he doesn't even try before backing off, then he is genuinely
not interested. 
haha, so true. i guess this tactic works on guys too!
aiyo, i hate it when someone is like so nice to me, and then
suddenly ignores me. drives me nuts. and makes me say stuff like
'stupid ass****' or 'i hate him'. (but actually i dont, just that i
get mad when things dont go my way ie he doesnt call me and
stuff)
but how to know if the guy is actually wooing you and just backs
off to get you to respond, or if he really dont like you that way
(and he somehow realises you feel that way for him)?