This is the basis for a bunch of Catfish episodes for sure. It's the worst because it's not just someone pretending to be someone they aren't.     It's someone suspecting someone has something to hide or isn't who they say they are, but, when the big reveal comes, we find out they are exactly who they said they were.     It's just that they were being weird because they didn't actually want to meet up in person. They were happy to string along digitally for months or even years because it was never real there.