I am an avid runner and I am married, she does not run, so on the weekends I spend my morning in running groups on longer runs with both male and female runners. This has always been a social outlet for me, as well as a great way to meet other attractive people, where innocent flirting can be fun as well.

A little about me, I am 48, 5’10 175, as a former college wrestler, I have maintained my physique and look much younger than my age. Running has continued to keep my energy high and my sex drive higher. I have run many marathons and even ultras, so I like to help others achieve their goal, the running group gives me that opportunity.

I was in this running group recently, and there were about 20 of us, we would meet every Saturday, and go on long runs. In this particular group, a married girl named Britney had been running with us for several weeks. We would end up running the same pace and chat along the way. When you are out there, you learn a lot about people, she was no different, she let me know she was 29 and got married 3 years ago to her college bf. He doesn’t run, travels all the time for work, so she starting back running after taking a break after running in college. She was an absolute knockout, 5’2 small frame and the most perfect ass, which she showed off in her lululemon running tights, her breast were small but perfect in shape with the nipples poking through her sports bra during and after runs. I would run behind her sometimes just to be able to admire her perfection.

After our runs, the group will go to coffee, on this particular day Brittany and I lost track of time and found ourselves alone, the rest of the group had left. She had been telling me how her husband was out of town and she gets bored. I told her she should text me and we could do morning runs during the week together from her house, at least you could have someone to break up the monotony. She smiled and gave me her number and told me to text her. She knew how difficult it could be to break away from a spouse. I knew I probably should not have got her number, because there’s no way I could have any kind of willpower with this beautiful woman. We were leaving and she gave me a hug and said “Thanks for being there for me while my husband is traveling”. Her body felt like heaven in my arms. I immediately got hard. I told her “No problem, I look forward to running more”

All the way home, all I could think about was Britney‘s body and how much I would love to get lost exploring her and fucking the married out of her. When I got home, I took a shower and my wife was in the bedroom. I went up behind her as she was making the bed, she was bent over and I grabbed her hips, and pressed my harness through my towel into her bottom. She let out a slight moan and said, “Someone got horny on their run this morning”. She pushed back and wiggled her ass on my swollen cock.

Oh honey, “You have no idea, Brittney finally gave me her number. She wants to run during the week together”. My cock now free of the towel.

You see, what I haven’t said is, that my wife and I have an open marriage, she is bi and loves to get fucked by both men and women and tell me all about it. She also loves for me to tell her about my affairs, eventually meeting them and then seducing them while I watch.

Brittney was our sexual fantasy since I first saw her. My wife turned around and got on her knees and took my cock into her mouth and sucked me like she was possessed. She would come up for air and say things like, “Describe her ass again” stroking my cock with her hand. As I would tell her what she was wearing on the run and how it looked so edible as she ran in front of me. My wife would just moan and go back to engulfing my cock. I would tell her what I wanted to do to Brittany, and what I would want her to do to Brittney. This only made her hornier as she played with her pussy while devouring my hardness.

I raised her up, kissing her deeply, tasting my own cock in your mouth. Turned her around, shoving my cock deep inside her. She let out a loud moan, as I called her “Brittney”, she went over the top in an orgasm. After all my flirting and teasing my wife, I couldn’t hold out any more and announced I was going to explode. My wife says “Inside me, fill my married pussy so my husband knows you were here”. With that I shot load after load deep inside her, “Yes Brittney, take my load!” Feeling my wife come one more time on my cock as I emptied inside her. We both collapsed on the bed. She said, “ I can’t wait to hear about this, maybe we can have her over for dinner” turning around she kissed me, telling me how much she love me, as I kissed her back and told her how lucky I felt having her as my wife!

Later that night, I got a text from Brittany, it said “ I hope you’re doing OK, I would really like to run tomorrow morning, can you meet me at the park?”

I immediately texted back, “I would love to, 6am?”

Brittney…”Yes, see you there and thanks again for letting me babble about my husband traveling, it is nice to talk :)”

Me…”No problem, anytime!”

I went into the kitchen where my wife was cooking dinner. I showed her the text, she handed my phone back. Dropped to her knees and pulled my already hardening cock out and sucked me right there. I didn’t last long pumping my seed deep into her throat. She stood up and licked her lips and said, “such a good appetizer”. I laughed and gave her a kiss and we had dinner.

I had a restless night sleep, in anticipation of my run. When I woke up I saw a note from my wife. “Have fun in your run, I can’t wait to hear about it. I loved your cock and I think she will feel the same!” I smiled and realized how lucky I am. Headed out.

I arrived at the park and Brittney was already there. She looked incredible as always. As I pulled in and got out, she looked upset. I asked her what was wrong and she explained “Her and her husband had talked early and he was upset I was meeting you for a run”. I said “I’m sorry, I don’t want to make him mad”. Her response was “Don’t be silly, he is just being childish, he is the one always working and he doesn’t care I am alone all the time. I want to do this!” She was more intimate in her response, like we were more than friends. Wow this is better than I thought it would be, my mind having a different conversation with myself. She is lonely, and vulnerable. I said, “Well let’s run some of that energy off and see if you feel better”.

As we ran, Brittney would tell me about herself and her struggles. How she occupies her time while he travels and how when he comes home he is always tired. This gave me the feeling that she was needing more and I have so many thoughts on how to help her. She asked me about my wife and let her know after 25 years of marriage, we keep it exciting.

I couldn’t come out and say she wants me to fuck you! In fact, yesterday she posed as you while I fucked her doggy style over our bed!

I told her that my wife was supportive, and she thought it was nice of me to support you while your husband is away. She feels bad for your situation. Brittney was impressed “She sounds wonderful! I’m glad she isn’t jealous of me”. As we continued to run, she asked me “How do you keep your marriage fresh after so many years?” I said “Well we allow each other to have their own passions and likes away from our own”. She said “Like running?” I laughed “Something like that”.

As we finished our run, Brittney’s nipples were especially hard through her tank top. She did nothing to hide them from my sight. She said “Can we do this again tomorrow?” I immediately answered, “Yes”. She gave me a long tight hug, saying “Thank you for being so supportive of me, it is hard being alone”. She was driving me crazy, but I had to pick a better moment. I let her know it was no problem and we agreed to meet the next morning.

Upon walking into the house, my wife met me completely naked at the door and gave me a big kiss. Putting her hand on my cock, “mmmm, looks like little Brittney got you all worked up again.” I pulled her in for a deep kiss, “Let’s go to the shower and I will tell you all about it” Entering the shower I pulled her into me and felt her amazing body, she is 41 but trains hard at the gym and still could pass as 30. I told her how Brittney was explaining that her and her husband got into a fight because she was running with me. She purred “mmmm so Daddy got her in trouble” as she stroked my hardness. “Yes, I guess so”. My wife asking, “But she came anyway”. I said “Yes, and she gave me a long hug when we finished”. My wife turned around and put my cock at her opening, she let out a moan and said “Daddy fuck Brittney’s married pussy”. With that I pushed deep inside her and grabbed her hips as I fucked her. She was moaning as the hot water splashed our bodies. I said “Brittney you feel so tight on Daddy’s cock, your husband is an idiot not fucking you any chance he could get”. My wife orgasmed as I said this. Feeling her tighten around my cock, I blasted deep inside her. Holding and playing with her small tits as I felt my cum dump deep inside her womb. “Fuck Brittney, that was wonderful”. As I pulled out, she turned and kissed me. Saying, “I am really liking your new friend, when do you think I can meet her?” I said, “Soon”. We got out and dried off. Looking at her, she was so beautiful, “I love you sweetheart”. She turned to me, kissed me deep, “ You better hurry up, or I may have to meet her myself”. With that she gave my cock one more stroke.

The next morning, I met Brittany for our run. Not able to get my wife’s role-play out of my mind. I now see Britney in a whole new light. But how do I cross that line? She greeted me with hello. As we started our run, I couldn’t help but notice she was wearing shorter shorts and her running bra was white and almost see-through. She looked good.

I said “ how is the hubby?“.

She responded “Probably not a good morning for that.”

I said “Oh yeah, trouble in paradise“

She said “He had to extend his trip three more days, which really sucks, because he was supposed to help me set up my Home Office. I got one of those desk from IKEA, you know the one that comes in the little box. And I am as handy as I look.”

Laughing, I replied “No offense Britney, but you don’t look real handy. If you need help putting it together, I could come by and help.”

She responded “I can’t ask you to do that!”

At this point, we were finishing up our run. “Don’t be silly” I replied. “I am pretty handy, my wife has to work late anyway. She would not be happy if I didn’t help you.”

Brittany says “Really, I can’t wait to meet her. She sounds like a wonderful woman”

I reply. “She really would love to meet you as well.” “ so what do you say I come by around 6pm”

She says “ if you were serious, I will take you up on your offer” she gives me another hug.

My day passes slowly, I work from home, it was hard enough, not to make myself cum thinking about her body. How my wife role-plays being her.

I texted my wife, Amy… “ I am going to Brittany’s tonight, she needs help putting together a desk!”

Amy responded, “you better take care of little Brittany, I want to hear about it later ;-) “

I text back… You are so bad ”

Finally, I drove over to her house. I was actually nervous knocking on the door. But as soon as she open the door, my mind switched to how fucking attractive this girl is. She was wearing short shorts, a tank top and a baseball cap backwards.

She said “Mike thank you so much for coming, this thing would have taken me weeks “

As I walk in, she leads me into the office. Shows me the box, saying “somewhere in that little fucking box, is my office desk.”

She bent over to open the box, her legs, so tan and smooth. I could barely concentrate. She looked back, smiled, there is no way she did not know I was looking through her clothes.

I started putting things together, you know the kind of furniture this is, 10,000 pieces, terrible instructions. I got to a point I needed her help holding a piece. This put us pretty close together, she was holding the corner. Our heads only a foot apart. As I got the screw in. I looked up and she was looking at me in the eyes. Fuck, it’s an hour or never. I leaned in and kissed her on the lips. Expecting her to pull back, but shocked, and immediately turned on, when she kissed me back. Her letting out a slight moan, our foreheads pressed together. She whispered, “God I needed that so bad“

The peace we are just attached, now secured. I moved closer to her, looking down at her. I pulled her body into mine, and kissed her deep. She kissed me back just as passionately, this was really happening. This gorgeous young woman., is in my arms as we kiss like teenagers.

Suddenly, she breaks away. Worried for a second this is over as fast as it began. She says., “ I need this more than you know, I just need sex!” I say back to her” you need sex, Brittney. No one should leave you unsatisfied.” We make out for several minutes, I’m in heaven as I use my hands to feel her amazing body next to mine. It is more wonderful than I could have imagined.

Her office is way to you crowded, I say, “Can we take this somewhere a little more comfortable?” She just takes my hand and guides me back to her bedroom. She says.” This room doesn’t get any action anymore, so this will be perfect”. Fuck in our own bed. As she stands at the edge of her bed, I remove her tank top, revealing the most perfect tits I’ve ever seen in my life. I immediately lower my head down and take one in my mouth, they are the perfect size. I alternate between both of them as she moans and runs her fingers through my hair. My cock becoming enlarged. I move up and kiss her again, keeping one hand on her bare breast. Without breaking our kiss, I lay her back on her bed. Her small body below mine. I kiss my way down to find her chest again. Playing with her nipples as they harden in my mouth. She is squirming and writhing underneath me. I kiss down to her stomach, I can smell her aroma as I get closer. I don’t even take off her shorts. I bury my face into her mound. Teasing her with my mouth through her spandex shorts. I can smell her, I can almost feel her wetness through her shorts. I take both hands into her waistband and in one motion pull down as she raises her hips and allows me to pull them off. Revealing the most beautiful bald pussy I’ve ever seen. So small. I take a minute to take in the site of such a beautiful young lady. And slowly push my face into her wetness, sticking my tongue through her lips. She yelled out in pleasure. As I ran my tongue up and down her slit finding her clit. I licked it and sucked it as I pushed two finger fingers inside of her, I can’t even explain how tight she was.

I did this until I felt her body tightened as she through her head back and had an intense orgasm, as I continue to suck her clit and push my fingers in and out of her wetness. She continued into her orgasm until her pussy was sopping wet. She pulled my head back with her hands. She whispered. “ stand up. Stand up now.” as I followed her command and stood up. She unbuckle my shorts. They saying another word, she took my cock into her mouth and sucked me, working her hand up and down the shaft like a real pro. What the fuck is wrong with her husband I thought to myself. I would be fucking this girl every day. Her mouth was amazing, and she used her tongue in the shaft. She fondled my balls with her hand and fingernails. It took all I could to hold back as she continue to swallow my cock. I knew I had to fuck this girl before I came. I leaned down and kissed her deep as she pulled her mouth off my cock. I laid her back on her bed. Lying on top of her., we kissed as my hard cock laid at her opening. “ are you sure you’re ready for this?” I said, all she did was reach down, put my cock at her opening and pulled me into her wet pussy. The feeling was amazing as we kissed in my cock, found her hot, wet pussy. I fucked her in and out as deep as I could go.

We were kissing and making love in the bed that she shares with her husband. That thought was not lost on me. As I made love to this beautiful woman, with my wife’s blessing. She yelled out as she had an orgasm, my cock finding her cervix, I pumped slow slowly as she came on my cock. The feeling was incredible, she kissed me deeper…”God this feels incredible, cum inside me, baby, fill me up with your hot cum!” That is all the encouragement I needed, my cock goes deep one more time, and I feel it pulse inside of her as I feel her pussy with all of my hot cum. She has another orgasm at the same time. We both taking in all the pleasure as we cum together in her and her husband’s bed.

As we come down from this incredible sexual high. My cock still deep inside her. She says. “ I hope I didn’t mess up your marriage”. I just laughed saying “ I think my wife will understand” She looked at me with a puzzled look, me finishing with…”You should come to dinner tomorrow night and meet her”