The Wolf is an animal (NSFW)

Xiao Zai knew he was risking a lot by saying something like that, but his blood still sang in anticipation in the split second it took Chu Yun to react.

At first, his exquisite features went slack with shock, and then tight with anger. The sharp sting of a slap struck Xiao Zai across the cheek.

"How dare you?" Chu Yun hissed, his teeth bared.

Xiao Zai sucked on a ragged breath, snapping his hips into Chu Yun with abandon. Despite the outrage on his face, he'd gone tighter inside, wrapping around Xiao Zai like a tight fitting glove. 

"Slap me again if you're so angry." Xiao Zai grinned, hoping he would.

Chu Yun did. Harder than before even.