We went out the sliding kitchen door and down the steps of the patio. I walked briskly across the lawn and right past the pool to the right side of th... pool house and opened the door for her.“Wait Keith let’s see the pool” Amanda said“Yeah in a minute. This is the pool house.” I flipped on the lights for her and gave her the tour. “This is lovely she said. Your Dad said he built this. He brags about it a lot. It’s nicer than I imagined.”All I wanted to do was suggest she go for a swim before. And as we were very close and open with each other she often asked me about my girlfriend and if I was still a virgin. I would also ask her about her figure and boobs and she told me that her curves were all natural, with no trace of silicone. I also asked her if she ever had sex before her marriage and her answer was “NO”. She also told me that her marriage life was not as good as she wanted, and she had not complete satisfaction in her love affairs with her husband. I was not surprised to. Once I was ready I stood up and told them both to look at me. I took my towel off and my 44 double d’s bounced slightly as I took the towel away. They were both staring at my big wide tits and I put my arms behind my head and just swayed them slightly left to right as I wanted to let them see how the nipples grew when young men stared at them. I then ordered them to hold a tit each and one of them to suck a nipple and the other one to lick a nipple. I was in such pleasure it was delightful.. OH FUCK MAC PLEASE EAT ME OUT I NEVER GOT THAT FAR WITH MARK PLEASE!!! I WANT TO FEEL YOU HOT LIPS ON MY CUNT!” Sally Yell out as she was grinning her soaking wet pussy on my two fingers.I smiled and remove my index finger and pointer finger from her sloppy wet virgin cunt. And bend down and plant a gentle but passionate kiss on my twin sister lips. Before pulling back just slightly “ are you sure you want that Sally… are you totally sure you want you twin brother to ravage your tight virgin.