You're mine, brother.
he murmured, his lips curling into that maddening grin.
“What?” My chest tightened.
“That’s your safe word,” he said, his voice low. “Say it once, and everything stops. I won’t touch you again. From that moment, I’ll only ever treat you as my stepbrother.”
Even as he spoke, his hand gripped me, and I gasped, trembling. My body betrayed me, responding in ways I hated and craved all at once.
“Until you say that word,” he whispered, eyes dark with something between amusement and hunger, “you’re mine. Mine, brother.”