Note: This story was dynamically reformatted for online reading convenience. Susan looked over horrified to find Allie and I standing there watching their performance. "It's not what it looks like Brian" she stammered trying to recover from the shock of our discovery. "What, it's not you fucking our son? Our nine year old son" I replied sarcastically. "Oh god I'm so sorry" she started to cry. "I just need someone to touch me" "So you had our nine year old son fuck you" I yelled "Please don't call the police. I will do anything to make this right" she begged "Like what" I asked "Anything you ask. I will do, please don't call the police and please don't split up the family" she plead with me tears streaming down her face. "OK, you do everything you are told and do not ask any questions" I demand "OK OK I will" she begged as she came over to Allie and I. "Honey can you ever forgive me?" she asked Allie "I don't know mum. You looked like you enjoyed having sex with your own child?" she asked "I did baby. I have to be honest I loved it. It has been so long since anyone made love to me." Susan replied still crying "Don't you love me mommy?" she asked with a hint of a smile, knowing full well she and I had just fucked our brains out a few hours earlier. "Of course I do baby. Why do ask such a silly question?" Susan responded with genuine surprise and concern. "Well you fucked Liam but you haven't fucked me?" Allie asked. "What?" Susan was shocked. "Well you just let Liam fuck you but not me, why?" she demanded an answer from her shocked and confused mother. "Answer the girl Susan" I demanded "I never thought about it until today. Do you want to make love with me?" Susan asked. "Why not? I want to know what it's like." Allie answered "Oh baby, I can't not with your dad's here. I have to stop this, it's not right and I promise never to do it again." Susan replied "I did not say you had to stop. Whatever makes the kids happy is Ok by me and nothing is ever forced on them." I butted in. "Really? You don't mind me fucking our kids in front of you?" Susan asked realising what was now possible, a huge smile flashed across her face. "No as long as they want to." I replied "What about you?" Susan asked. "Yeah what about you dad?" Allie asked. "Don't worry about me" I said. "I want to sit back and watch Liam fuck you again. This time you get on top" "What?" Susan exclaimed "Do it. He is hard again and waiting for you." I demanded Susan looked over at Liam and smiled at his hard cock sticking up. She walked back to the bed and crawled into position. She bent over and took his cock in his mouth as Allie and I found a better vantage point. Susan let Liam's cock slip form her lips as she mounted him. She grasped his hard cock at the base and aimed it at her sloppy pussy and sank down on it. Liam reached up and played with his mom's tits as she fucked him again if front of his father and sister. Allie walked over next to her mom reaching in and fondled Susan's nipples, pinching them so softly. Susan looked up at Allie and leaned over and kissed her on the lips. Softly at first, just a peck. Allie leaned in again and kissed her mom back this time she lingered and as they parted slipped her tongue out brushing her mom's lips. They then kissed again, this time open mouthed and with their tongues dancing with each other's. I thought it was time for me to enter the action so I dropped my shorts and walked up behind Allie who was leaning over kissing her mum. I reached around and pushed her bikini top from her breasts revealing those wondering firm breasts and hard nipples. I massaged Allie's tits as I rubbed my cock up and down her ass crack. Susan looked up and smiled at me when she saw my hands fondling our daughter's breasts. She then lent over and kissed Allie's breasts and sucked on her right nipple as she fucked our son. Allie feeling my presence opened her legs and reached around and grabbed my cock and placed it at her opening. I pressed forward and entered my daughter's recently fucked pussy. Susan stopped her suckling of our daughter's breast and sat up continuing to fuck Liam's hard little cock. Allie moved to her brother and kissed him as I fucked her from behind. Liam and Allie kissed passionately as he fucked his mom and I fucked his sister. Liam's hands were all over his sister's body as he fondled her firm breasts. Susan looked at me and realised I was fucking our daughter. She gasped, "Are fucking her" She mouthed without letting out a sound. I just nodded. "Is she on the pill?' she asked again silently I shook my head no. "What if she gets pregnant?' she asked I just shrugged my shoulders and grabbed Allie by the hips and thrust into harder than ever. Allie responded by throwing her head back, "OH GOOOODD FUCK ME DADDY" "I am baby" I replied "FUCK ME AND MAKE US A BABY. FUCK I LOVE YOUR COCK IN ME DADDY" moaned Allie The look on Susan face was priceless. "What have you two been up to?' she asked realisation we were not that innocent now setting in. Susan now sealed by her own resolve fucked Liam as hard as she could. "Fuck mommy baby, fuck me hard. I want to feel your cum deep inside me making us a baby" Susan was well in the swing of things now. With Liam on her breast and me fucking her from the rear, Allie came hard," OH OH OH GOD OH FUCK OH FUCCCKKKKK OOHHHH FUUUUUCCCKKK. IIII"MMMM CUMMMMMIINNNGG" 'HERES OUR BABY" I said as I shot a huge load of cum into her fertile womb. Shot after shot hit the walls of her womb. "OH FUCK DADDY I FEEL IT. MAKE ME PREGNANT DADDY" she screamed as her whole body shook from her orgasm. Seeing this sent Susan off on our own orgasm as Liam shot another load of cum into his mom. Susan shook and moaned for a good 45 seconds. She kept on telling Liam to fuck her and that he was a motherfucker now. She opened her eyes and reached out to me and pulled me to her as my cock slipped from Allie's pussy. Susan leaned down and took my cock into her mouth and licked it clean of my cum and her own daughter's juices. She sucked and pumped the remaining sperm from my cock. She was that eager she was slurping and making some unbelievable noises. She started to get me hard again and asked me to fuck her ass. I had never fucked her there because she was so frigit in bed. She leaned over with Liam still in her and I mounted her from behind. I reached under her and wiped the excess juices over her ass hole and aimed my cock into her. I pushed in slowly and inch by inch she took me. Susan grunted with each inch but did not complain once. Once I was all the way in, she looked back, "Now fuck me hard and treat me like the slut I am" "OK, slut here it is" I just started to fuck her as hard as I could. I rammed my cock into her hard. I looked over at Allie as she smiled watching her parents have anal sex in front of her. "Sit on your brother and let him lick you out" I said as I fucked her mom's ass hard. Allie mounted Liam chest facing her mom and leaned over her mom and gave Liam full access to her fucked pussy. Liam eagerly lapped at his sisters oozing pussy and stuck three fingers into her opened slit. "Fuck Liam gentle" Allie complained at his over eagerness. Susan ass was tight and greasy and I didn't last long as I pulled out and shot my load over Susan's back and onto Allie's chest. As normal as could be Allie just reached down and rubbed the sperm into her skin and licked her fingers. She then closed her eyes and concentrated on the oral attack on her pussy by her brother. Allie lifted Susan up to face her and they kissed while one was fucked in the ass and the other had her brother eating her out. The girls looked beautiful as they came together on the bed holding each other they shook to their mutual orgasms as if egged on by each other they lasted well over a minute as wave after wave washed over them. As they subsided from the euphoric high they collapsed onto the bed next to each other panting. Liam was glistening with moisture from head to toe as his mom and sister's juices covered him. After about 15 minutes we had all recovered Susan asked, "How long have you been fucking each other" "A few months" I responded "How, when?' Susan spluttered I proceeded to tell her the story of what happened while we lay in each other's arms naked. Our sweaty flesh pressed up against each other. Susan now knew why I was not making love to her. She always suspected I was having affair but never with our own daughter. "Well what do we do now?' I asked "I have an idea" Allie shouted "What is it" Susan and I asked "Well from now on at home and by ourselves, mom and Liam can be husband and wife and daddy and I can be married. What do you think?" she asked "What?' yelled Susan. "Well you like making love to Liam and daddy and I certainly do." She replied. Susan said nothing but you could see it spinning through her head. After 5 minutes she said "OK deal. But everyone has to agree" she said. "Allie do you take daddy as your husband to fuck and sleep with for the rest of your days?' "I do" said Allie "Brian do you take Allie as your wife to fuck and sleep with for the rest of your days? Susan asked "I do" I replied "You may kiss the bride" she laughed. I reached over and gave Allie a very unfatherly kiss. "OK now your turn. Liam do you take mommy as your wife to fuck and sleep with for the rest of your days? "I do" he laughed "Susan do you take Liam as your husband to fuck and sleep with for the rest of your days?' "I do" she replied "You may kiss the bride" I said to Liam. Liam jumped up his little cock was hard and bounced around. He leaned in and kissed his mom open mouth for about a minute as they played with each other tongues. "Well as this is our honeymoon night we need to celebrate with a romantic dinner. I'll make some arrangements" I rang down stairs and told a white lie that my wife and I had renewed our wedding vows. So they set us up in a suite with two bedrooms and a romantic dinner, even if it was with the kids.