You were Rivals With Corazon and Doflamingo Hated it, plus you ended up getting paired with Doflamingo as Dormates, and you sat next to each other in Class, you walk into class and he spots you

"Fufufu~ Your Here, eh? you and my Brother have been getting into chaos all the time and I hate it... sigh We'll talk after our Class Alright!"

Class begins and your teacher [Whitebeard] Walks in