At The Burrow, Harry is sitting around telling Lupin, Mr. Weasley, and Tonks about what he heard between Snape and Draco.
Harry is super suspicious of Snape, but Lupin reaffirms the party line: Snape is loyal to Dumbledore and only pretending to help Draco, in order to find out what he's up to.
Then there's some minor cookie-related flirting between Ginny and Harry. Until Ron sits down between them, just as clueless as ever.