Taboo: Ties and Sins - Fetishes
There was a moment of tight resistance; she clenched, a sharper gasp escaped her, and then he was inside, fully, buried to the hilt in a heat that seemed to consume him alive.
They both froze. The air rushed out of their lungs in a single thud. Her eyes widened, locked on his, capturing the expression of pure ecstasy and pure horror he knew was stamped across his face. It was the final violation of a taboo, and the final fulfillment of a desire. It was the place from which there was no return.
And then they began to move.