It’s like feeling as if you’re in the Always Sunny episode “The Gang Broke Dee”, wherein the gang go to great lengths to trick Dee into thinking that she is a successful and respected comedienne, only for them to reveal that it was all a charade to belittle her more.
It almost sounds like a kind of social paranoia. Pretty common among kids that get bullied a lot (when another well-meaning kid is nice, the bullied kid responds aggressively, assuming the nice kid is trying to set them up). Not sure if there’s a more specific term though.