Brother's Best Friend

Summary: Harry is YN's brother's best friend and YN isn't a little kid anymore. Featuring Italrry, teasing, and a sea view.

"I said, use your words," he scolded, bringing a hand down to grab at her chin and make her look up at him. His eyes were blown out already, filled with lust. "Thought you weren't a little girl anymore, hm? Or do you still want to be treated like one?"
She swallowed hard. Her heart was beating harder and faster than usual and she didn't know what to say.
"Well, if that's how it's gonna be then, fine. I'll treat you like the little brat you are, would you like that?"
Another nod.
"Words."
"Yes."
"Yes sir," he corrected her.
"Yes sir."
"Good girl," he said with a smile.