Like a flash of lighting, Sherlock moved. He used one hand to hold John down, and the other to guide himself as he shoved his cock inside of John- no lube, no stretching, just one quick, hard thrust. At the same time he bit down on John's neck. He knew he had to be careful about draining too much, but he had to feed.

While his fangs pierced John's neck, he rocked hard into John,. There was nothing soft or gentle about it, it was hard and sweaty and needy and desperate.