The added speed and her fingernails digging into his skin was more than enough to take him over the edge. His hips came up off the bed and he tightened his grip on the back of her head, holding her still as he jerked through his orgasm until he was empty.
He was breathless when he finally released his grasp and let his hips fall back to the bed. "Holy shit, Lydia," he panted. "That was incredible."