You are not alone in this, I'm an introvert as well and have a thin network but some of those contacts from the network are genuine friendships I made with form

You are not alone in this, I'm an introvert as well and have a thin network but some of those contacts from the network are genuine friendships I made with former coworkers. I've made friends with gregarious extroverted coworkers too but it seems that those connections don't last once we're not working together. Oh well, it is what it is, there are clear disadvantages to being introverted.