Hermione meets Harry the next morning and confirms that she believes him.
But Hermione also states the obvious: "[Ron's] jealous!" (18.13).
Harry can't believe it, and refuses to try and make amends with Ron.
Hermione tells Harry he has to write to Sirius to explain what's going on with the Triwizard Tournament.
Harry writes to his godfather: "I don't know if you've heard, but the Triwizard Tournament's happening this year and on Saturday night I got picked as a fourth champion" (18.31).
Harry can't explain why he's feeling so anxious, so he just closes the letter and sends it off to Sirius.
Harry's life in Hogwarts gets miserable: the Hufflepuffs give him the cold shoulder because they think he's stealing the spotlight from their boy Cedric.
Hagrid believes Harry, but he's still making him help with the skrewts: "No longer shell-less and colorless, they had developed a kind of thick, grayish, shiny army. They looked like a cross between giant scorpions and elongated crabs – but still without recognizable heads or eyes" (18.52).
Even the Ravenclaws think that Harry "had been desperate to earn himself a bit more fame by tricking the goblet into accepting his name" (18.57).
The Slytherins make a bunch of badges: "Support CEDRIC DIGGORY – The REAL Hogwarts Champion!" They also flash: "POTTER STINKS!" (18.64-5).
Harry gets into a fight with Malfoy (of course).
They both hit each other with a spell at the same time, so the spells ricochet instead.
Harry's Furnunculus curse makes Malfoy's friend Goyle sprout green boils.
And Malfoy's Densaugeo curse makes Hermione's front teeth grow and grow.
Professor Snape comes along and sends Goyle to the hospital wing.
But he also claims not to see any difference in Hermione's teeth.
And he takes fifty points from Gryffindor for Harry and Ron's protests.
Harry and Ron get detention together, to boot.
Harry starts fantasizing about cursing Snape with the Cruciatus Curse.