My wife Shelley and I are in our early forties, and while not looking at a swinging lifestyle we have discussed ways of spicing up our sex life. We never really came to any result, but a few nights ago an event happened which started things off. She went to a party with some of her friends, leaving me home alone, and I went to bed to watch some porn, hoping for some action when my wife came home.

About midnight I heard her pull into the driveway, and a few minutes later there were voices in the house. I listened and realised it was my wife and another woman, which I worked out was her friend Kim. Kim is pretty and very much a BBW, and we have always got along well.

Shelley entered the bedroom, explaining that Kim was going to stay over. She had had a fight with her husband at the party, a follow on from several weeks of arguing. After a few drinks he had got rather nasty and personal, criticizing her weight among other things. I made some comment about how lovely Kim was and that her husband was being an ass, but didn't know Kim was standing just outside our room with the door open, and heard everything. She said thanks, so I called her into the room and she sat down on the bed.

I reached out to squeeze her thigh as a show of support, she smiled and turned to Shelley and asked if she could kiss me. She said yes, I was expecting a kiss on the cheek, but Kim leaned forward and pressed her lips to mine, lingering for a few seconds before pulling away. She had beautiful soft lips and I was a little aroused. She looked at my wife and said that was nice, and asked if she could do it again. She agreed and for the next minute or so we shared a passionate tongue kiss.

I flushed with embarrassment when Kim pulled away, but before I could say anything my wife asked Kim is she wanted to join me in bed. Kim looked at me and asked if that was OK, I looked at my wife who was smiling, so I agreed. Kim stood up and slipped out of the dress she was wearing, her massive tits barely contained by her bra. Her belly and thighs jiggled hypnotically as she moved. She removed her underwear, then slipped into bed beside me.

We resumed tongue kissing, my hands exploring her big thighs, ass and tits, squeezing and pinching as I went. I took each of her nipples into my mouth and sucked and nibbled on them, while she reached down and massaged by erect cock. She then pushed me back and moved under the covers, kissing and biting my body. I looked at my wife sitting at the foot of the bed, rubbing her pussy through her dress as she watched our foreplay. I pulled the covers back to watch Kim’s actions, giving me a smile as she slid her mouth down my shaft. She pumped up and down slowly, before running her tongue all over it, teasing and kissing as she went. This was followed by some steady pumping with both hand and mouth.

By now Shelley was also naked, lying next to me fingering herself as she watched her friend pleasure her husband. I was ready to fuck now, so I pulled Kim up and tongue kissed her, before laying her on her back and kneeling between her chubby thighs. I plunged two fingers inside her pussy, working them around and in and out, using my other hand to tweak her nipples, squeeze her tits and jiggle her ample stomach. I rubbed by cock up and down her slit a few times, before forcing in home in one quick thrust. Kim let out a moan followed by and ‘Oh yeah’. Initially I held my body above hers with my arms extended, so as I fucked her I could watch her body shake with the force.

“Oh yeah fuck her honey!” my wife encouraged as I built up a steady rhythm, accompanied by Kim’s moans. I lowered myself down to feel her warm body pressing against mine, tongue kissing her again as we fucked. I reached around and grabs handfuls of her big ass, enjoying the feel. Kim broke off the kiss to let out a few load moans, before she stiffened and called out “Fuck yeah” as she came. When her orgasm subsided, I pulled out and knelt up between her thighs again. I was close to cumming too but didn’t want to finish yet.

I motioned for Kim to get on her knees which she did without hesitation. I gently slapped her ass a few times, before pressing my thumb into her pussy and rubbed her clitoris with my fingers. My wife lying next to her put her arm around her neck and pulled her down, and they shared a passionate kiss as I fingered. Kim then moved to her mouth onto one of my wife’s nipples, and she responded by reaching in and playing with her tits. It was the hottest thing I had seen in a long time.

I slid my cock back into Kim and steadily fucked her doggy style. My wife moved into a kneeling position next to me, watching my cock slide in and out of her friend. She planted a big tongue kiss on me, then put a hand on each of Kim’s ass cheeks and spread the apart, to get a better view. By now I was slapping in quite hard, enjoying every stroke. My wife let go, and I grabbed Kim firmly by the hips and fucked for all I was worth.

“Oh yeah, don’t stop fuck me hard” she moaned as I could feel my orgasm coming. I held off as long as I could, luckily I felt her go a second time, just before I exploded, pumping what felt like buckets of cum deep inside her. When I had finished, I pushed all the way in and held it there, while I ran my hands up and down her thighs, across her back and round for another feel of the juicy tits. I pulled out, she rolled over and we lay down side by side, my wife sitting on the bed smiling at us, obviously having enjoyed the show as much as we did.

Kim spent the night in our spare room, and my wife took her home the next morning. When she got back she said Kim loved what happened the night before and is interested in a repeat. Shelley said she is too, but next time she will get more involved. I can hardly wait.