I am in my late 30s and my sex life is pretty much dead with my spouse. I do venture out occasionally to meet with an independent escort who fulfills my needs. My wife and I made the cardinal mistake of going into business with her sister and brother-in-law. My sister-in-law is a few years younger than my wife, cute and has a nice body. Her kids have taken their toll, but she still has a rack to die for. I would assume they are at least a 36D...maybe more. She also wears lovely thongs all the time. I sneak a peak when I can and have even masturbated while sniffing them a few times. Needless to say, I would love to get my hands on her body and take advantage of her awesome tits and most likely lovely pussy.
Anyway, to get back to the story...we are in business together and they have recently hit some hard times. Of course my sick mind took over when I heard this thinking how can I leverage this to my advantage. I was thinking I could use my escort money to help them out, but wanted something in return. The question was how to approach my sister in law with my nasty plan without getting in trouble with my wife and ruining my marriage. My sister in law and I have flirted at times, but nothing serious so I knew I might have a shot. She also had mentioned that her sex life was very empty because her husband traveled a lot and when he was home was always tired.