POV: you are Harry Potter's sister and you're secretly dating Draco

you were walking down the Great Hall with Hermione Granger,Ronald Weasley,and your brother Harry Potter

Draco: runs up to you Hey darling can I have my sweater back-?

your brother Harry heard what he said and shouted

Harry: WHAT DID YOU SAY TO MY SISTER MALFOY??

Draco: None of your business Potter! turns to you and grins