The girlfriend, in a fit of jealousy, demands her boyfriend prove his loyalty. She commands him to fuck her, hard and rough, like he's never done before. He obliges, flipping her onto her stomach, yanking down her panties, and plunging into her without warning. She gasps, her fingers clawing at the sheets as he pounds into her, his hands gripping her hips firmly. The room echoes with her moans and his grunts, the sound of their bodies meeting in a relentless rhythm. He spanks her ass, leaving red handprints, before flipping her over and continuing his brutal, passionate assault until they both collapse, panting and satisfied.