The black box in Harry's pocket felt as though it was burning a hole in his pocket. He also felt like everyone, Hermione included, knew what he was planning for dinner. He'd invited Hermione to dinner under the pretense of celebrating for her success in finding a cure for prolonged exposure to the Cruciatus Curse.
Now he sat waiting for Hermione to finish getting ready and he was trying to figure what exactly to say, when she came out of her room. To say that Harry's jaw hit the floor would be an understatment and like saying that Snape was merely a bad guy.