Fundamental Leykis 101. If you can ignore a good looking female, you already have one leg up (pun intended) so to speak. When I was younger and still in play, we had two favorite techniques:
One was to whistle/hoot not at the girl in question, but something other like a friend, car, etc. Once they got over the intial deflation that they weren't the object of desire, then you could move in after they had been softned up a little bit.
Two is more traditional - pay attention to the tag-alone uglier friend. Those who undestood the inside game actually appreciated this techniques, as the less-attractive one got some needed face time that they normally wouldn't get, and the prettier one got to sit in on the 'interview' to see if the suitor was suitable.
Anyway, for all the youngsters out there, I'm sure these techniques are still in play.
At a party or event, walk into a room filled with strangers and without making eye contact
with anyone,immediately identify the one woman in the room who has the power to break your heart. Now ignore her as you go about having a great time. When you do finally meet, she should feel discovered... found....not caught in some large fish net she designed.