How to catch a magizoologist

Everybody in MACUSA is sure of one thing: Percival Graves loves rules and he doesn't like people, he doesn't even seem interested in social interaction at all. He's a workaholic and scares the whole auror department. So... when suddenly his office is full of all kinds of tea and his bookshelf of studies on dragons and magical creatures they all start to wonder.
They wonder even more when find him smiling at the adorable wizard with reddish hair and freckles.