The four of us were sitting round our dinner table enjoying the last of the wine which my sister， Wendy， and her boyfriend， Brad， had brought as their contribution to the meal.“How the hell am I going to go a month without sex while you are away?”， I asked.“Is that all I am to you， a penis?”， my husband， Fred， asked.“No. I know that we will talk on skype every day and that that way we can keep in touch with each other， but that will only leave me even randier. Phone sex， even with a video link， does nothing for me.”“I think that you should find yourself a lover for while I'm away.”“You don't mean that!”“I do， actually.”“I'll share Brad with you while Fred's away.” my sister， Wendy， offered. “He's insatiable AND he keeps telling me that his favourite fantasy is a threesome with you and me.”“That's funny， that's my favourite fantasy too.” my husband chipped in. That was news to me. “Sally， I think that you should accept Wendy's offer and share Brad with her while I'm away. I've been worrying about how to tell you this， so I'm just going to come out with it.”“You know that I got this promotion because Sam Smith was retiring after 15 years of making these trips for the company. Well， when he heard that I would be his replacement， he presented me with a rather special file; it's a list of escort agencies in all the US cities that I'll be visiting. He assures me that they are all very discreet and very safe. In fact he has been using most of them for the past 15 years without any sort of embarrassment.”“You're going to be fucking your way across America? And leaving me alone， here?”“Yes and no. I hope that you won't be alone. I think that it makes a lot of sense if Wendy and Brad move in here while I'm away， and the three of you fuck your brains out. How about it?”I had an image flit through my head of Brad fucking my pussy from behind while I was eating Wendy's pussy. I hadn't eaten Wendy's pussy since we were teenagers. OR Brad fucking my arse while Wendy and I sucked each other in a 69? Would I like Brad to fuck my arse? No one had ever fucked my arse， except my husband， and that had only started about a year ago when we both wanted to spice up our love making. A threesome with Brad and Wendy would be something exciting to tell Fred while he was on the other side of the world， fucking escorts.“You're serious aren't you?”“Yes， I am. In fact to prove how serious I am， I think that the four of us should start fucking each other right now. I want to fuck your sister and I know that her boyfriend would love to fuck you with Wendy and me watching.”Suddenly I was so aroused that I could not suppress a moan. The crotch of my panties was soaking wet.“I think we can take that as a 'yes' from you Sally. How about you two， Wendy， Brad?”“I'm willing.” “Let's do it.”Fred grabbed Wendy's hand and led her toward our bedroom. He looked over his shoulder to confirm that Brad and I were following them. As they walked Fred slipped his hand under the bottom of Wendy's shirt and caressed the bare skin of her back. In response she pressed her beautiful young body against his.Brad held me against him as we also walked toward the bedroom， but then he stopped and pulled me around so that we could kiss. As we kissed he squeezed my breast through my T-shirt.“You've no idea how long I've wanted to do this.” he told me. “How come you're not wearing a bra?”“I never wear a bra around the house， or when you two come to dinner. I really feel sexier with my tits moving naturally.”Then I peeled my T-shirt off and put his hand back on my breast.“Are you two joining us?” That was my husband's voice.“We'll be there soon.” I called back and went back to kissing Brad.We finished undressing each other and walked naked， hand in hand into the bedroom to be greeted by the most erotic sight; Wendy was lying naked on the bed， her legs hanging over the edge of the bed and spread wide apart. Fred，70岁老bbbwbbwbbwbbw also naked， was kneeling between her legs with his face pressed into Wendy's crotch. I was surprised that I did not feel even a tinge of jealously， rather I found it thrilling to watch.Brad and I just stood and watched， I was fascinated， I think that he was too. Whatever Fred was doing with his tongue， lips， fingers or teeth， Wendy was loving it as she moaned and yelled her encouragement.“Oh! Yes! Fuck me with your tongue. Suck on my clit. I'm about to cum on your face.”And she did. And how! I just hoped that Brad would soon be giving me an orgasm to match Wendy's.As we watched Fred moved up Wendy's body and his very stiff rod slid easily into Wendy's wet cunt. After watching Fred fuck Wendy for a couple of minutes Brad tugged me towards the bed. We moved around to the free side of the bed， he urged me to lie on the bed just as Wendy was lying and he plunged his face into my crotch.Immediately my orgasm started to build. Brad was very talented with his tongue and fingers and that， combined with erotic activity beside us on the bed meant that I was cumming almost immediately.“Oh! Yesssss! Fucking awesome!”Brad flipped me onto my stomach with my legs still off the edge of the bed. He pushed my legs apart， stood between them， and slipped his cock into my cunt in one smooth thrust. His cock was thicker than Fred's and about the same length. The extra thickness stretched me more than I was used to， but I quickly fell in love with the feel of him inside me.Then I felt his cock pulse as he came deep inside my cunt.“Oh! My god! That feels awesome!” I cried as I came again.Then he was cumming inside me and I was cumming again with him.After that I lay back on the bed and pulled Brad into bed beside me. By now the movement of the bed caused by Fred and Wendy fucking had stopped. Soon I think that we were all asleep， certainly I was.In the morning I woke to find that Fred was playing with my nipples. As I came fully awake I saw that he was smiling， lovingly at me. I remembered last night and a flood of relief washed over me; he still loved me!Then his love making became more insistent and very soon I was wracked by a magnificent orgasm as he licked and sucked on my clit. When he plunged his cock into my cunt I felt that we were a whole couple again. My second orgasm of the day washed over me as I felt his cum pumping into my inner cunt.As we calmed down， with him still inside me and on top of me， I realised that the bed was moving. I looked and saw that Brad and Wendy were fucking beside us. Brad must have got out of bed and walked around to Wendy's side of the bed. Judging by her moans， she seemed to be enjoying herself very much.It was Sunday morning. After breakfast Brad and Wendy left to pack for a month's stay with me and Fred started packing for his trip. I just stayed naked and lay in the sun beside our pool. I realised after about an hour that the teenager next door (I guessed him to be 15 or 16) was spying on me. It occurred to me that it would be fun to invite him over， while my husband was away.My god! After all those years that I had been faithful to my husband I was really going overboard. It was his fault for changing the rules of our marriage so radically.Sunday night was a repeat of the night before with Brad fucking me and Fred fucking Wendy. Wow! Then， next morning Fred fucked me for the last time for a month and Brad fucked Wendy again.I had taken the morning off from work to drive Fred to the airport. I decided to dress slutty to remind him that I was still his official sex partner. I had on a skimpy top which left a lot of bare skin: arms， almost all my back and midriff. It was obvious that I was not wearing a bra. I also wore a very short skirt with no panties. While I was driving I had my skirt hitched up so that Fred could see my bare pussy.“Are you really going to go to work dressed like a slut?”， Fred asked me.“Yes.” I replied， “I do have a pair of high heels that I will put on when I get to work. My new boss has been hitting on me for a couple of weeks now. I think that he might get lucky today.”“I thought that you were going to be fucking Brad while I am away?”“I am. You changed the rules of our marriage when you told me that I should find myself a lover. Then you told me about all the escorts that you will be fucking in America. Why should I limit myself to one lover when you will be having ten or twenty? I'm hoping that I will have had three cocks in my cunt by the end of today: yours this morning， my boss' at lunchtime and Brad's tonight.”“You know that there are health risks if you fuck multiple partners?”“Fine! I'll get myself tested before you get back.”Then we were at the airport， so that's how we left it. He kissed me as he got out of the car， I wished him “bon voyage”， and he disappeared into the terminal.To be continued in “New Rules 2”Please vote and/or comment.