Parasocial Relationships: Imaginary Friends of the Social Network Age (thebootstrappedfounder.com)

Not without a certain amount of irony, everybody's parasocial internet friend Tom Scott did a really good segment on the parasocial relationship as part of his talk to the Royal Institution: https://www.youtube.com/watch?v=leX541Dr2rU&t=2215s

I swear it's also a short video on its own somewhere, but neither Google nor I can find it today.