Oh, that,' said Ginny, giggling. 'Well-Percy's got a girlfriend.' Fred dropped a stack of books on George's head. 'What?' 'It's that Ravenclaw prefect, Penelope Clearwater,' said Ginny. 'That's who he was writing to all last summer. He's been meeting her all over the school in secret. I walked in on them kissing in an empty classroom one day. He was so upset when she was-you know-attacked. You won't tease him, will you?' she added anxiously. 'Wouldn't dream of it,' said Fred, who was looking like his birthday had come early.