e-bff - Someone you think is your best friend, but they only talk to

Someone you think is your best friend, but they only talk to you through a screen and you’ve never met in real life.

You’re my e-bff, but I don’t even know what you look like.

We’re e-bffs, but you’ve never met my mom.

You said you’d be my e-bff forever, but you’ve never even replied to my last message.