“Girls tend to act with more poise but then they have the boys pulling up the car to the house and waiting there for the girl to secretly enter the car so her neighbors don’t see her on a shiduch. You call that mature?”
I call that tznius. That isn’t a maturity issue. A boy and girl dating trying to avoid community exposure to the extent possible is a virtue of tznius. They aren’t married to each other. Dating itself is only a heter (albeit a necessary one) against tznius. Not being seen dallying with an opposite gender is a virtue even though you have a legitimate reason being together.