Mark obeyed, his movements becoming more confident, more aggressive, as he slid the glass dildo in and out of her tight rear passage. The dual penetration was overwhelming for all of them. Ethan could feel the unyielding pressure of the toy, could feel every thrust Mark made, and it sent bolts of lightning up his spine. He was buried to the hilt in her slick heat, and the added stimulation was pushing him to the brink.

"Look at him, Ethan," Vanessa panted, her head falling back, her body arching. "Look at my ex-husband on his knees, fucking my ass with a toy because he can't stand to see me happy...