My hard cock made contact on her thighs which she ignored. It was a summer month, so we decided to go to my room.My parents were out of station for 3 ...ays so she was ready to come with me within few minutes we reached to my home. I welcomed her, served her a coffee and started talking with her and our conversation started from whatever jokes we used to crack during our chat and soon it turned towards sex.She had told me earlier that she was fond of reading sex stories and had visited sex site. Reka (girlfriend sis) is the heart of the story. Shes is around 20 and doing her college.She is tall and pretty compared to my girlfriend. Normally I, my gf and her sister used to go out all together so that her parents wont have doubt on us. Everything was normal until one day while I and my girlfriend was taking in skype, her mom called and she minimized the window and went out.I was waiting for her and after 10 – 15 min I saw a someone coming to my surprise she was my girlfriend’s sister. She wore those huge sunglasses that Victoria Beckham made popular and that covered almost half of what appeared to be a face that I was sure that I had seen somewhere before. The collar of her jacket was turned up, I didn’t know whether it was as protection from the icy blast that originated in the Antarctic or to hide her features even more. ‘Where to Ma’am.’ ‘I need to get to Melrose, is that okay?’ ‘Do you mean Melrose Park?’ I assumed that she was unfamiliar with South Australia and had. What was going on? Is this really happening? He adjusted himself so I couldn't feel it anymore and he started to blush. I knew he was embarrassed, but I wanted to keep this going. I looked at the pool and rolled over pushing him in. I caught him off guard, so he didn't have a chance to pull me in. I sat on the side waiting for him to come back up and when he did, he saw me laughing too hard. He got that devilish grin that turned me on so much and grabbed me on either side by my ass and pulled.