Why cheat? Wife jacks me between tits and squirts on hand

A woman in black lingerie and stockings kneels on a desk while a man in a black shirt stands behind her, holding her hips as he penetrates her from behind. She leans forward, bracing herself on the desk, while her reflection is visible in a mirror behind them. At one point, she turns her head back toward him, and later, a close-up shows her hand covered in clear fluid as she touches herself during the act.