Stalk your friends on Tinder. Don't actually do that. It's just a description of what this code does.
To run it using Python 3, just do:
pip install -r requirements.txt
python3 app.py
You'll then need to answer "y" to a prompt asking you if you really want to look at your real-life friends' Tinder profiles. Otherwise the app will quit.
If you answer "y", the app will be available at http://localhost:5000.
Listen pal you gotta put your Facebook id and Facebook auth token in SECRETS.json. I have no idea how to get these without sniffing the traffic of the Tinder app with mitmproxy. Or you can use any proxy, really. Or there's probably another way to do it. Or you could just close this page and go talk to them, I'm sure they're nice.
¯\_(ツ)_/¯