My heart was still racing from Knox’s message when I arrived at Mom’s lavish birthday party the next evening. I obeyed him like the dirty slut he’d awakened in me. The shortest red dress I owned hugged my curves, the hem barely covering the bottom of my ass. No panties. Nothing. Every step made my swollen, bare pink pussy lips rub together, already slick with fresh arousal that threatened to drip down my thighs.

The house was full of guests—Mom’s friends, family, business associates—all laughing and drinking around the massive cake. Mom looked radiant at fifty, but my eyes immediately found Knox. He stood tall and commanding in a fitted...