"That's my girl," Derek panted, pleased. But he wanted more. "Don't stifle your pleasure," he urged, matching her pace, driving them both towards completion, the books rattling on the shelves as he continued to pound into her. "If I wanted you quiet, I'd gag you. Don't deny me, Ally." He mouthed against her collarbone again, this time using his teeth to mark the skin. "Don't deny yourself."