I grabbed one of my socks off the floor next to my bed, and readied it. As I lay there, gently caressing my balls and my hard dick, I pictured my sist...r, lying in her bed with her hand in her crotch, her little titties exposed. I had seen her in bathing suits and bras enough in my life that I could imagine how they looked, though I had never seen them bare. My balls began to tingle and my body and mind were filled with pleasurable waves of endorphins as my cock started pumping sperm into my. .. ohhh... What's the matter, afraid hubby Charlie really will find out?Yes Mistress. I just can't chance it. He'd divorce me for sure, or send me to prison, or worse!Relax slut, I'm not going to tell. I know just how much you fear him finding out, that's why this talk is making you so so wet!I... um... what?Oh don't deny it. We both know the thought of getting caught turns you on more than anything, even more than your daughter's fist!Please Mistress, don't joke.I think you should march right. She opens her mouth to say something, I cock my head at her, and she quickly closes it again, remembering not to complain. She crawls reluctantly over there. I give her ass a little pat as she goes. I help her get comfy, propping some pillows behind her, making her sit upright.Her wrists and ankles still have detachable bondage cuffs on them. I leave her legs to lay freely, straight out in front of her. I look up. The beautiful bed has vertical posts running up from each corner, and horizontal. Killer idea it was we became good friends soon.Days went by and we became very close, coffee, dinner, chit chats have started. When her husband was out for the flights I used to visit and talked to her. She was very open and friendly but didn’t see any sign of being unfaithful but one thing was sure they had an arrange marriage and couldn’t adapt with each other properly, one Saturday when her husband was out for the flight I visited their house and asked her if she is getting bored, she can.