He notices when the restraints become loose, when they fall away completely at his tugging, and after that cry, the way she looks and feels right now. Beautiful. He uses his newly freed arms to wrap around her a little bit and quickly roll them over, suddenly no longer simply able to rock his hips for her, but control the entire rate and speed of the totality of movements. A hand planted in the pillows either side of her, he lifts himself up enough to get a good rhythm going, initially pulling nearly all the way out of her before sliding back home.