Mmm, her calling him sir was always a turn-on, appealing to his innate superiority. Merlin kissed her back, pressing his fingers between her legs, sliding two inside and hooking them forward to find her pleasure points. He was responding to her very quickly, and didn't waste a lot of time fingering her when he could be buried inside her. He grunted softly as she straddled him, and he looked up into her face, watching her as she slid onto him. "Perfect," he breathed, drawing the front of her robe open enough to see her breasts.