The prompt for this chapter is:"What are you dressing up as?"
She asks him while it's still September. Halloween is a handful of weeks away, he doesn't know why she's thinking about it so prematurely.
"You have to think ahead." She informs him as she returns a book to its proper place in his library.
"Otherwise you end up in a costume you don't like, or a poorly made one. Halloween is all about planning." She tells him and he wants to laugh. He's been planning for centuries. He's rarely, if ever, planned for the holiday she loves so much.
"I won't be in costume on Halloween. I don't celebrate it." He tells her.
"Only because you were alive for its invention." She quips.
"You're off by a few centuries. I'm not that old."
"Are you sure?" She asks, pretending to be concerned.
"Because you seem like you're so old you forgot what fun is." She finishes and there's a challenge in her eyes.
As he buys the costume, perfectly tailored, he tells himself that it's only because he never loses at anything.
Not because Elena tricked him into celebrating.