My sister-in-law is very beautiful and sexy

I have to say that my younger brother is really lucky to marry a talented, beautiful, and not lacking in sensuality girl. She has everything a woman needs, and sometimes I envy my brother because I wonder why I couldn't have a perfect wife like that. But it's because of that perfection that I had the opportunity to get close to her, touch her skin, feel her breasts, and most importantly, have sex with her without her resisting or fighting back.

Why doesn't she resist? Because she is also very lustful - as I mentioned before, the sensuality in her perfection. She always actively shows off her seductive body to me when her husband is away or not paying attention, making me intensely aroused, and of course, I'm not so foolish as to not understand what my beautiful sister-in-law wants...