Then Lisa lifted her hips until the head of Doug's dick nearly popped free, but at the last second, she pushed back down, driving his cock deep inside her. She threw her head back and closed her eyes. She lifted up again, then slid back down, a bit harder. Up and down, up and down. She was riding the full length of his cock. She was dripping wet. I could see drops of her juices dribbling down his shaft, and over his balls.

I sat watching this scene, completely enthralled. I couldn't believe I was watching my wife having sex with another man. What's more, I couldn't believe how much...