It’s a good skill to know ASAP during a date if a girl’s interest in you is flagging, so that you can turn it around before her vaj has completely folded in on itself and disappeared into a Labiarity. The interim between inquisitive petaling vaj and inimical imploding vaj is shorter than inexperienced men realize. If you sense a perturbance in the whores, you have to move fast before their thermal intrusion ports seal up.
Most men (by definition betas) don’t lose the girl at the first meet. The stone cold approach rejection is more exception