What she needs, Castle's there to give her and he digs into the new pace with enthusiasm, holding her hip with one hand while supporting his balance with the other. That their working relationship should be as contentious as it is would probably explain why they come together so well in bed -- the universe has a way of balancing.

The new angle takes him deep and he sees spots courting the corners of his vision. "God," he gasps, "Beckett." He starts to rock his hips a little faster, a little more forcefully. 'Climax is building at the base of his spine and he hopes to god that she's right there with him.