Oliver grinned and held out his hand for Rose to take. "Deal, you brat. We play scrabble. Loser gets to do something the winner determines. For me that includes allowing you to try and make pigtails with my hair. For you I'm going to think of something evil."
He drank his cocoa and, after putting the mug down emerged wearing a chocolate-y moustache. "Getting you home by ten. That should be manageable. I've got to work all day but there are breaks of course and you can roam around Diagon Alley or join me in the shop if you want to." Finally Oliver noticed his chocolate moustache and wiped it off. Clearly he reverted to a kid when he was in Rose's presence.