I followed the sound thinking it wasn’t who or what I thought it was.If there was something going on I wanted to have proof before I started accusin.... Peeking around the corner into our bedroom, I was shocked to see not only my wife but her sister also.Both were naked on top of each other rubbing their vaginas together at a furious pace. I wanted to step into the room, though the shock was keeping me stock still.I know that when we met, my wife was slightly bi-sexual, mistakenly I thought that. She sucked me dry and brought a condom from her room. It was like this was the movement I was waiting for. She gave me the condom and I wore it.She again started teasing and seducing me like crazy. My cock was hard within minutes again and she sat on me and slowly started riding my dick. It was one of the best feelings of my life. I couldn’t imagine what was happening to me.I started to moan in pleasure and she was doing the same. In a few minutes, she was riding my dick nice hard and fast. I. ”Now even while being with my girlfriend Carey and I always had our friendly flirting, though we never did anything. I was attracted to her, I mean she was about 5’7” 120lbs, brunette, nice big round ass and a nice set of D cups! She was pretty killer, but it was also pretty known between our friends that she was a bit of a whore, she had slept around with quite a few people. I always laughed about it though.So I finally got out of bed through some clothes on and decided to head over to Carey’s. Shecame into the room and held out my new dress. "It's only just arrived.Do you like it?"It was absolutely spectacular. The matching panties were the first thingI noticed. They were from a pale soft peach coloured satin with whitelace ruffles around the legs and waist and then three more rows ofruffles across the bottom so there was a strip of the satin showing withthe white lace ruffle either side. I judged the dress to be quite shortso the panties would show and it had an empire line with.