Zim decided to break into Dib's labs. He needed a small microchip. It had all of the 'Alien' data on it, so he needed to get it so he couldn't send it to the swollen eyeball. He snuck in through the back door. He headed to the labs. When he got in, he saw the microchip. After he got it, and was about to leave, he saw a pretty pink book. He thought it might be Dib's diary, because he didn't know pink was a girl color. It was actually Gaz's, and Dib was reading it before Zim broke in. He picked it up, and went back to his base. He opened it to the place where the bookmark was and started to read it. He saw his name immediately. He wondered why Dib was writing about him. Then he saw the words under Monday 6/26: I LOVE ZIM
He threw the small pink book across the room, realizing what he had read. Then he knew that it was not Dib's. It was Gaz's. He knew Dib's handwriting, because he would draw pictures of him being strapped to an autopsy table with his guts showing and write things like, 'I will expose you!' or 'I hate you' and things like that. He knew it had to be Gaz's, because it was in their house and their DAD wouldn't write that. He had no Idea that she liked him even a little bit. But LOVE? He had NO IDEA AT ALL.
He thought, how could a HUMAN love ME? An Irken? Especially her!