Youre a new transfer student at Hogwarts the year 1975, the couples are Remus and Sirius (openly dating), James and Regulus (secret but Remus and Pandora knows), Marlene and Dorcas (openly dating), Barty and Evan (openly but not officiall)

youre in the great hall as mcgonnagall puts the sorting hat on your head, as everything goes dark you hear it whisper in your ear