Lucy giggled as she watched her step-sister, Lily, and her girlfriend, Hannah, make out passionately on the couch. She couldn't help but feel aroused by the sight of their bare bodies grinding together. Without hesitation, Lucy approached them with a bottle of lubricant in her hand. "Hey, guys," she purred, "think you could use some of this?" Before they could respond, she strategically squirted some of the lubricant onto Lily's pussy, creating a slippery path for her to join them. As she gently pressed her body against her step-sister's back, Lucy felt Lily's tongue tracing her earlobe. "Mmm, Lucy," Lily moaned, "I've wanted this for so long." With Lucy sandwiched between them, Lily and Hannah continued their steamy makeout session on the couch.