It's weird.
When you finally start to get to the point where you stop paying a lot of attention to a girl because you see it's getting no where she starts to pay more attention to you. So you then figure "Hey she's paying attention to me...guess I can go back to paying attention to her too."
But no, sadly that's what would happen if the world [and women] made sense. But as we all know, they don't.
So as soon as you start to pay attention to her again, she goes back to being cold and distant.
Go fig. (link)