Hi Joseph,
Oftentimes, it takes a girl some time to warm up to a guy, especially when her only reference to the guy before having met him on a date was through a dating app. This happens more than you realize, even with girls who are extroverted by nature.
Assuming that you chatted with these girls on a dating app for a good amount of time and got the vibe that they were extroverted through these conversations before asking them out on a date, there is a good chance that they are genuinely extroverted by nature.
It’s just that they need some time to get comfortable with seeing you in person. Girls who are extroverted often worry that if they were fully themselves on a first date or two, they would be too much for the guy and he might get turned off.
So, they wait it out a little to get a better feel for the guy’s personality and what he can tolerate. Once they get a good read on that, they become a lot more comfortable with showing their extroverted side.
So yes, you may have to carry on the conversation for the first few dates but if you are patient, you will eventually get rewarded with her opening up to you. Be careful what you wish for. Once she feels safe and comfortable with you, you may not be able to shut her up.