Free to do as he liked in this vast space of a room, Riley let out a long, low howl as Tao began to move along his cock in earnest. He could feel his lower stomach twisting in twitching as the tension began to build just below his bellybutton. It was barely a minute before his howl was cut off as he drew in a sharp breath, coming hard into Tao's mouth, his back buckling forward. His nails pressed into the vampire's skin and his forehead touched the surface of the warm water.