My wife and I are very close but have decided to lead separate sex lives. We still have sex together but not very often. To make up for it she actively encouraged me to shag our lodger who is 19, almost 20 and our daughters’ best friend. So, this is my story. Our daughter asked if her friend could come to stay with us. She used to live too far away to be able to attend the university that our daughter attends. Not long after she moved in our daughter moves to Spain to help with her studies, so we were left with the friend which we were ok with. She’s nice enough, a bit of a geek, and by that, I mean she wore large classes, was plain looking, flat chested and skinny but very very clever with languages and computers so way more intelligent than me. So how does all this come under the title ‘swinging’? Well, my wife stays out most weekends with her fuck buddy boyfriend which is fine. I had noticed that our lodger was becoming a little too attached to me. She would sit next to me on the sofa and put her arm through mine. She would stand at the bedroom door with just a towel round her after getting out of the shower or in t shirt and knickers. The t shirt would be wet and so revealing, so much so she needn’t bother wearing anything. I will be honest and tell you that she regularly gave me a hard on. Then it just happened. It started with a fumble. It was a Saturday evening; the wife was out and I was reading a book in bed. I could her our lodger in the shower and I will admit that I had another hard on thinking about it. Then there was silence until the bathroom door opens and she appears at my bedroom door with just a towel wrapped round her. She stood there with a big grin on her face, her glasses fogged up so much that she had to keep taking them off the wipe. I asked her why she bothered wearing them until she cooled down so they wouldn’t fog up. She giggled and said ‘then I wouldn’t be able to see anything’. We chatted for a while, but I had to lift my knee a little so that she wouldn’t see that I had a hard on. The quilt was just about covering my belly button, so I had to be careful. She looked at my knee and actually asked me if I had a ‘stiffy’. I was a little shocked at how forward she was. Before I could answer she told me that my wife had told her that she makes me go hard when she walks around half naked. In fact I think her words were ‘ L***** told me that I make you hard, that’s funny’. She ran to the ben and jumped on to it next to me and said that it was fine and that L***** had said that she didn’t mind. ‘L***** said I could help if I wanted. I looked at her wrapped in her towel, her hair soaking wet and I knew she was obviously naked under that towel, but its what she did next that finished me off. She giggled, put her hand on my belly and slid it down under my shorts to my shaft. She put her had round it and started to slowly wank me off. ‘is that ok’ she asked, *L***** said it was’. I put the book down and kicked the quilt down. My new best friends pulled my shorts down and with a look of deep concentration slowly tossed me off. ‘it is big isn’t it’ she said, ’ L***** said it was big’. I looked at her but she was oblivious. I put my hand over her shoulders and watched her slowly tossing me off. I just had to see her naked, so I tugged at the towel. Almost without thinking she leant forward which allowed me to pull it open. For a brief second she stopped tossing me off and pulled her towel off, throwing it to the floor. I studied her body whilst she resumed tugging at my cock. Her skin was pale, her breasts no more than mounds but her nipples where big, bright red and hard. Her pussy was more or less smooth with just the hint of ginger pubes to go with her ginger hair. I sat there as she tossed me off faster and faster. I reached over and felt one of her tits, her nipples were like marble. Her wanking got faster as I squeeze her breast. In the end I hard to warn her that I was going to cum, she sounded urgent ‘come on my tummy’ she said and lay flat on her back releasing my cock. I straddled her tossing myself off until I ejaculated. My cum shot out more or less missing her tummy but splashing over her tits and chin. I let out a groan. She wiped the end of my shaft with her hand and laughed, ‘that was nice’. Then simply gets up, grabs the towel and cleans her self up complaining that she had only just had a shower. Then she was gone. The next evening she came to my room wearing just a t shirt and panties and asks if she could do it again. I kicked the quilt down, pulled my shorts off and t shirt sat there naked. ‘Yay’ she giggled, got undressed and jumped onto the bed and immediately started to toss me off. A few minutes later my cock disappears into her mouth until I gave her another warning that I was going to cum. She jumps back and I repeat last nights performance, this time I aimed for her face covering her tits and face with cum. She complained, ‘ I said my belly’ . That didn’t stop her licking the cum from her lips. The next night she was out so I didn’t get my wank but the night after that the wife was home. She asked me if I had had a good weekend. I said that I had, she smiled and asked if our lodger had tossed me off. I said nothing and the wife laughed and said’ I know she did’ and ‘good for her and you’. That evening the lodger is back at my door, the wife is downstairs. She shrugs her but doesn’t ask if she can come in, she simply undresses and gest into bed next to me and starts tossing me off. This time I lay on my side, feeling her tits and rubbing her pussy. As she wanks me off I suck her face and squeeze her tits. Before long I slide down and she loses grip of my cock but I just had to suck her tits. I did it with gusto and fucked her with my hand. She wasn’t quiet about it, she shrieked and moaned repeating over and over ‘oh fuck, oh fuck’ I tasted her pussy and she was sweet as honey. I felt her hands pulling me up until my cock was nudging her wet pussy. I started to slid into her but for some reason I looked over my shoulder. My wife was watching, her hand under her top feeling herself. I wanted her to watch so I spun our lodger round so I was facing the wife and thrust my cock into her. She let out a scream and started to buck and thrust her pelvis into me. I fucked her hard all the while watching my wife watching us. Her top was off and her big soft tits hung there whilst she fingered herself. I looked down and watched the girl’s tiny tits wobble whilst I fucked her. I’m embarrassed to say that I didn’t last more that 15min or so I guess until I knew I was at the point of no return. She was groaning and grunting and shaking then after shouting out ’its ok, I’m on the pill’ she grunted that she was coming. I emptied a good loan into her tight pussy causing her to cum again. The next night we fucked again but the night after that my wife joined us. We had a dirty evening of three way sex and it was amazing. The wife and I don’t initiate anything, the lodger acts like its a game and almost begs us to get into bed ‘lets have fun’ she pleads. So we all fuck, me in her pussy and the wife sucking her nipples until I cum, then they just grip each other with arms and legs and just hug each other tight sucking face whilst I sometimes fuck one or the other in the ass. And yes. The wife and I are having more sex.