John straddled his chest and stroked his cheek. "Good boy. I'm so very proud of you. Yes." He began to stroke himself. The mere sight of Sherlock offering himself up... Knowing he could do anything to the vampire. But it went both ways. He would the vampire do anything to him.

If Sherlock wanted him mounted by beasts, he would get on his knees. It was filthy, but he loved it. And wanted it all.

John groaned as he started to climax, pumping seed all over Sherlock's face and neck and torso. He made sure he covered the vampire.