The stepbrother and stepsister, both naked and dripping with sweat, locked eyes as they took a moment to catch their breath after their heated sex session. The stepbrother, his huge cock still throbbing inside his stepsister, groaned in pleasure. She looked up at him with a mixture of lust and fear in her eyes. "Promise me you won't cum inside me," she whispered, a shiver running down her spine. "I'll tell our parents, I swear I will." He grinned, his body trembling slightly with anticipation. "Don't worry, sis," he replied, his voice thick with desire. "I'm not going to cum inside you...yet."
As he began to thrust again, faster and harder than before, the fear in her eyes slowly gave way to raw lust. She wrapped her legs around his waist, ur gently pulling him closer as he continued to kiss her deeply, their hearts racing in sync with every beat.
