She said she was happy we agreed to come over and meet everyone in a different light. My wife went up to her old room and we undressed and talked for ... few minutes. I was hard as a rock and she suggested we just stay here a minute until I can control myself. We finally went downstairs and outside to the pool and all the folks I had met at our wedding were there, but now all naked. Her s*s and b*o and his wife, 2 uncles and aunts and 7 cousins....5 girls 2 guys. It was incredible. Her. And insert in her love hole. It’s slid first time and after few tries it gets inside. I pushed further, she moaned with a pain. It is not going easily as she is virgin during that time. I slowly push further and started to fuck her slowly. She started to moan.I am fucking her in missionary position and sucking her boobs which are filled with milk. I kissed her lips to reduce moans. I started to fuck her fast and as soon as my movement fast her boobs started to bounce and she moaning like hell. It wasn’t a likely place for my tape to be but I wanted to be sure and was a bit nosy/curious anyway so I poked around for a minute or three, when I spotted ”it”. Not my tape but her laundry hamper with a set of bright red panties hanging out from under the lid. Satiny ones with a kind of lacy edge on them that reminded me of things I’d seen in guy’s magazines but didn’t expect my sweet sister to have. At that moment the formerly solid wall between my teenage lust and feelings about my sister. I pulled back and then thrust again, this time a little more of me penetrated. I moved my right hand to hold her under her chin at the top of her neck while my left held the top of her head.With the next thrust I felt her swallow and suddenly my cock slide into her until my balls slapped against her chin. I saw her gag and felt her throat contract around me. I withdrew, letting her catch her breath before pressing back again. This time my cock seemed to move more easily and soon, for the first.