Secretly watching my sister-in-law's arousal and mutual masturbation leads to a satisfying ejaculation on her ample buttocks

A voyeuristic husband secretly watches his sultry sister-in-law's arousal, joining in with mutual masturbation. The sight of her ample, hairy Latina ass in lingerie drives him to a satisfying ejaculation.

I've been spying on my sister-in-law, trying to catch her in the act of pleasure. I've been watching her as she gets herself all worked up, her body trembling with anticipation. It's been driving me crazy, watching her touch herself, her fingers moving in a rhythmic dance that makes my heart race. But I've been too afraid to approach her, too scared of what might happen if I reveal my true feelings. Until today. Today, I decided to take a chance, to confront my desires head-on. I followed her into the bedroom, my heart pounding in my chest. And then, I saw it. The sight of her, naked and beautiful, was enough to make me lose control. I couldn't resist the urge to touch her, to taste her. And when I did, it was like nothing else mattered. I fucked her hard and fast, my cock throbbing with pleasure. And when I finally came, it was all over her big, round ass.