Her back arched, her body cramming her pussy back along his cock and her ass into his crotch, her hips rolling and grinding herself into him. Her pussy muscles locked around his rigid shaft, squeezing it. Her body's muscles spasmed, tensing and relaxing rapidly. Her head rolled back, her neck straining. Her mouth fell open, moans of pleasure rolling past her quivering lips. Those moans were interspersed by snippets of intelligible words laced with "god" and "yes."

Sam responded by holding himself buried deep inside her, grinding his own hips back at her. His fingers in her hair tugged harder, straining her scalp with their tension. His other hand squeezed...