Facebuddy
A person you pretend to know on Facebook but you're not even close. They're more like a stranger with a fake ID.
My facebuddy is my mom's friend. She added me because she thought I was her kid. I'm not even close.
I'm friends with my math teacher's ex on Facebook. She's my facebuddy. I don't even know her.
I added my facebuddy because he had a cool name. Now I have to talk to him. I regret my life choices.