Nugget wrote Lily a love letter that he gave the Protagonist to give to her. Lily, being a kindergartner, can not read the letter and asks Ms. Applegate to read it for her. She then reads the letter to the whole class.
"Nugget likes the pretty Lily. He also misses her brother, Billy. Nugget likes the Lily's hair. Nugget likes to smell her chair." Ms. Applegate stopped abruptly due to Nugget getting angry and the rest is the letter is never read.