Not yet!" she cautioned, easing up a touch, not taking him as deep as before. Suddenly Sparr laughed, his body tightening and releasing. He shook his head. "What?" "I get it now." He couldn't help but grin. "You do?" Calista was smiling, too. "Yeah, I mean I can't say I never thought about it, but..." "So you know we have to time this just right?" "Yeah, but like I said, you're the one driving the train. And wearing the watch." "Right, and I'm not telling you when. Just follow my lead." Calista had stopped riding him when he laughed, but now she resumed, her body pressing against his, slick and hot. Whatever time Calista was targeting better be soon. With the blonde riding him, Sparr had no control over the pace, couldn't ease up if he got too close, or even use shallow strokes. A

