Rebecca moans softly as she feels her tight anal opening stretched by his massive cock. She looks into his eyes, filled with lust and submission. As he slowly withdraws, she taunts him with a sexy smirk before taking him deep once again. Their bodies are flush against each other, sweat dripping from their skin. With every thrust, she feels the powerful surge of pleasure from her forbidden cove. He growls in ecstasy, his hips pumping in syncopation. She gasps for air, her nails digging into his muscular back. Their breaths are ragged as they reach the brink of orgasm. With one last powerful push, he fills her to the brim with hot semen. She collapses in his embrace, their hearts beating as one, knowing they have just crossed a line they can never uncross.