One thing you should do on a first date
One thing you should never,ever do on a first date
Leave your date without saying goodbye.
That will be an extremely rude, immature, inconsiderate action.
The world is all about being courteous now.
Regardless on whether or not you fancy your date, you still inform when you had to go.
You do NOT just decide to leave the crime scene, leaving your date wondering what the hell might have happened to you.
That is just plain rude - RUDE, I tell ya.
Age, academic achievements, wealth etc cannot be used to define a person's maturity - or lack thereof.