Making grown-up friends

How do you make new friends in a place where everyone is busy? In college it’s easy to make friends, but now, out of college, in the grown up world, no one seems to make new friends - either they’re always your friends or you just make friends with coworkers… 

I made friends with coworkers, but none of us know the area or know anyone in the area to help us find things to do. Life is pretty boring lately. I feel like something has to give soon.