Why Did You Bite Me?

Draco's unexpected action made Riley yelp in surprise. His face scrunched up in pain. He tried to get away.

However, Draco's lips stayed clamped over Riley's ear. He noticed even the man's arms had snaked around his middle, preventing him from moving.

Incredulous, Riley leaned back in an effort to look at Draco behind him. But having one ear captured, he couldn't completely turn his head around.

"What are you doing?" Riley asked. Then full of grievance, "Why did you bite me?! And why are you still biting my ears?!" His voice carried a slight quiver.

What was Draco thinking? He knows Riley has very sensitive ears. Yet the man kept teasing him. Also, they were so close - skin to skin, Riley's bare back resting on Draco's chest.