Look, dealing with Teacher Arvina is easy. 

Nux then extended his hands towards her and smiled,

"Shall we go now?"

"A-Alright."

Evane didn't know what was happening, for some reason, when she heard that this deal was exclusive for her, she blushed and stepped back.

Nux then moved forward and extended his hands towards her and her heart started beating for some odd reason.

He was just a student offering a treat to her teacher after winning a duel, why was she acting like that!?

And since her mind was preoccupied with these weird thoughts, she couldn't think properly and accepted Nux's offer so that she can deal with the awkwardness.

She then grabbed the Nux had extended and the two of them started walking towards the Academy's Canteen.

While holding each other's hand.

This caused Evane to blush even more, however, since she had already accepted Nux's hand, she couldn't go back on her words anymore. He would feel awkward if she does that.