I know the feeling. I'm having a new year's party and this girl who thinks I like her but I actually don't basically told me she's coming. I can't think of a nice way to break it to her that she's not invited.
I know what you mean, there was this guy who kept inviting himself over to my house/eating my food/asking what is there to doooooooo. One time he decided to invited himself over, I wasn't there so nobody answered the door. For a joke/to be annoying he thought he would smack on my window with a stick to check if I was. My mom threatened to call the cops on him haha. Thing is he was my friend until he started doing stuff like that. Why are teenagers so stupid /facepalm.