If they met after Crowley became a demon, it's even more romantic, and the look on the angel's face shows that he knows it. Luo Binghe's recent experiences with love have made him just a bit soft to the idea. Crowley's advice helped Luo Binghe gain the courage to pursue Shen Yuan, and Luo Binghe is meticulous about repaying his debts. He does not need Crowley to ask him for the second favor he promised. It's clear that the most fitting way to reciprocate Crowley's deeds would be to help him find what Luo Binghe has found. In the future, he'll have to look for opportunities to assist.

For now, his duty here is fulfilled. "You should leave this place, in case he returns."