He resists the temptation

Despite desperately wanting to know what Sansa was doing, Bran did not avert his gaze. He kept on looking at Arya, and kept playing with his cock.

He imagined stroking his cock over Arya's face. She would be egging him on, begging him to cover her in his sperm. Her beautiful grey eyes staring up at him, biting her lip in anticipation. Bran would blow his load all over her, Arya trying to catch as much as possible with her tongue. Theon had told him of a girl doing that once.

"I guess I was wrong," Arya whispered, blushing. While Arya's competitive side was glad she'd beaten her sister, a part of her also felt desired for the first time.

"I guess I should reward you."