Introvert

My dad said something that kinda triggered my mind a little bit recently and here is the reason to it;
A few days ago a couple of my friends asked me out to an event in the city. they'll be hosting a shadow play. Being a city girl without a hometown, i got really excited because i've always wanted to watch one. anyway i have a very strict curfew and the shows is from 8pm-12am i already got the permission from my mom but i still had to ask my dad so i called him since he was home and i was out in the city with my mom.
He asked me the basic questions, where, when, how are you gonna go back and when it came to the with who part i told him its just with a few boys from my school and later he asked am i only the girl? and i was just like yeah cause i dont see a problem to it, ive known the guys ever since i was 9 yearsold.
The triggering part to this rant of mine is when my dad asked me do i not have any 'GIRL FRIENDS' ? im not gonna lie, at that moment it kinda hit me hard i only have 3 'girl friends' that i would always hang out with. The number of guy friends that i hang out with outweighs the girls.
That 3 friends of mine are barely around most of the time, like i cant just call them and say hey do you wanna go somewhere with me and they'll be like yeah.
i do know that i grew up into a introvert, i keep things private and secured to this small group of people that i know since primary. I honestly have no complaints about it because its easier to manage. However, since we are all grown up ive come to the realization that its kinda sad i still limit myself to those people especially when they are not around as often anymore. I do have other 'girl friends' that ive gained through working and uni but those are just the people that i hang around with in campus or a small reunion once in a blue moon basically.
Lets be real, everyone basically have their own life and just like me they would stick with the people they've known the longest cause they are comfortable and there is nothing much i can do about it.