Then he asked is she yours sister? I said yes he said sorry yaar. And I also asked is she yours? He said yes I said no mention dear. Than he was stari...g my sis ass and boobs, then I asked do you like sis swapping? First he look at me then said yes I like swapping, then I said would you like to swap your sis with me for fuck, he replied ok m agree. I asked have you ever fucked your sis? He replied yes I fuck whenever I get chance I said I also do it with my sis, and then I ask can you make your. This weekend would be different though because I had been locked in my chastity device for over 2 weeks. I hid the key at my parents house so I wouldn't be able to get free until my next visit home which would be at least several weeks. I knew this would make me even more willing to get fucked in my slutty boy pussy and push my limits even farther. Chastity is great at getting rid of my boy desires and making me seek penetration as my only means of sexual release. After 2 weeks I was thinking. I asked her since when the late 20s was too old for a baby, and she informed me in no uncertain terms that taking care of a baby was hard physical work, and she wanted to have the stamina to be able to enjoy the experience. OK, I shut my stupid male mouth!Our target was the classic one of Alpha Centauri. Since this was a binary system, there was a lot of chance for one or more Earth-like planets and the possibility of life to exist there. Hopefully, we would find out when we got there.As usual,. Oooooh, I just cant tell you how hot I was feeling then. He kept licking my crack and pressing my ass. Then I told him I want to come on top. So he happily agreed and I asked him to suck my boobs and he was this time doing it wildly. I was just sitting on his hard on dick which was inside his shorts was getting impatient to come out. Then I went down removed his shorts and his 7-inch dick was totally hard on. I grabbed it and stroked it. I had a couple of ketchup sachet in my bag. I took that.