Siblings' Secret Sin

In the dim light of their shared room, the siblings' breath hitches as they notice each other's arousal. The brother's cock strains against his boxers, while the sister's pussy dampens her panties. They lock eyes, the unspoken words hanging heavy in the air. "We shouldn't," she whispers, but her body betrays her, her nipples hardening, her hips tilting towards him. He groans, his hand reaching out to cup her breast, his thumb brushing against her erect nipple. She gasps, her hand wrapping around his cock, feeling its heat and hardness. They're crossing a line, but they can't stop, the taboo nature of their actions only serving to heighten their desire.

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