"So I made the bet with Dean. I was certain I was going to win after the Yule Ball. When I asked you to go, and you said you had a date but it was a secret, I was sure that Harry must be it, because he didn't have a date either. It made perfect sense. That was going to be the Big Announcement, the night that you finally admitted to the school that you were a couple. I told Dean and he agreed. Even had the Galleons in his pocket waiting for you to walk into the Great Hall together. Then it all went a bit tits up."