Is there a window of opportunity for a guy to ask a girl out?

Mvc123
Is there a point where the girl's attraction for the guy begins to fade, or she gets frustrated by him not asking, and if the guy asks then, he'll probably get a "no", and probably always will be all he gets from then?

When is the best time to ask?

there's a load of websites about this window of opportunity. Just wondered if it was true or not.
Updates
+1 y
How can you tell when that attraction has faded for her?


What can you do about it?
Updates
+1 y
How long is too long to wait to ask her out? She realized I like her about 3 weeks or so ago, could be a bit longer... I haven't asked her out yet. I think there have been opportunities, though.
Updates
+1 y
Maybe too many opportunities lost to do anything now.
Is there a window of opportunity for a guy to ask a girl out?
20 Opinion