Some girls like to be with you and have your attention, but won't let you escalate. If you reach the point where you're ready to bail on them, before you do, do this.
I've talked about parting shots on Girls Chase before.
A parting shot is anything you say to a girl before you ditch her, leave her behind, or otherwise cut contact with her, because it doesn't seem to be going anywhere with her.
It is, in my opinion, not great form to simply walk away from a woman you've invested time and energy into, and had even a bit of a connection with and got a little ways with, without a parting shot.
The reason for this is simple: sometimes women play games, under the assumption that you will continue to play games.
They do this because most guys will.
But you're not most guys.
And before you shove off, it's important that women understand that.