Surreptitiously seducing my friend's voluptuous white posterior while her partner remains oblivious

As a connoisseur of the exquisite form, I find myself irresistibly drawn to the perfectly sculpted white derriere of my friend. When she's not occupied with her partner, I seize the opportunity to indulge in a little voyeuristic pleasure. I'm a master of the art of seduction, and I know just how to get what I want. I can't resist the allure of her luscious backside, and I'm not afraid to let her partner know. I take every opportunity to tease and tantalize her, my eyes never leaving her ample backside. When she finally succumbs to my charms, I waste no time in taking her from behind, her partner none the wiser. The taste of her, the feel of her soft skin under my touch, it's all I crave. I lavish her with attention, my tongue exploring every inch of her before I take her again, this time from the front. The sight of her partner's cum dripping down her backside only fuels my desire. I take her one last time, leaving my mark on her glorious derriere.