Nikki and Katy looked at each other and shared a knowing smile. “There would need to be four of us for it to be fair though” said Katy, slowly ope...ing her legs. She shuffled round on the sofa making sure that Mark could see up the bottom of her nightgown.They sat in silence for a while; Mark was still trying to get his head around what was going on. He had just caught his little sisters talking about having group sex and now his best friend was suggesting he helped them out. He looked at his. By this time my heart was beating very fast and I was very nervous of what was going to happen in a few minutes.After 15 minutes, I heard the sound of the water stop and my heart was still beating fast and there she came out with a bath towel tied at her breasts and covered till her thighs .I peeped from inside without her seeing me and she a had good pair of thighs which made her look extremely sexy. Then suddenly I came out of hiding and stood in front of my mother she was shocked on seeing. “Ride my dick and make me cum, bitch.’ He demanded smacking my ass before squeezing my tits with both hands. I positioned myself placing my knees on the step where he sat. I then leaned forward as I started humping my hips up and down onto his real huge black shaft.I moaned and cried in pleasure as I rode his massive cock. I sat all the way down on him taking every inch of his huge dick deep into my eager horny cunt.“Your sweet pussy feels so good!” He moaned as I continued jetting his dick in. I encouraged Ashley to be the point person in the family for the connection with Lisa. There hadn’t been much of a mother-daughter link when Ash and I first met, and I couldn’t see any downside to improving that relationship.While that was going on over the following days, I also encouraged Christy to be more communicative with her parents. Chris and I drove out to her parent’s home in Westborough on Thursday afternoon and had some conversation and then we took them out to dinner. A lot of that.