Okay now I'm getting mad (lol I do that alot when I read about someone's situation) xD
Ever notice your grandma changes the subject whenever you say you weren't lying, like Surfer_girl said?
1.) Changed the subject! Why does she think he's stupid?
2.) Pssh, yeah, like he KNEW that your grandma was gonna show up out of the blue and take things the wrong way! He can't predict the future, and neither can you. He didn't know she was there.
3.) Why the heck would she talk to someone about this behind your back? It's not that big of a deal! You were just looking for a mouthpiece! No offense, but I think your grandma might be making this situation more dramatic than it is. Also, why would she bring up the crazy notion that you have a crush on him? Oh! Maybe your grandma has a crush on Mr. Hanna! Ooohhh, tell her that, see what happens.