I [f]ucked [m]y girlfriend´s sister again – this time her husband watches us

Hi dear people of r/gonewildstories,

since this story will have a longer introduction, I will mark the part when the action begins with some —.

Some time ago I posted two stories of me fucking with my girlfriend´s sister ([Part I](https://www.reddit.com/r/gonewildstories/comments/aelba7/the_story_of_my_girlfriend_asking_me_to_fuck_her/) & [Part II](https://www.reddit.com/r/gonewildstories/comments/bxv843/part_ii_the_story_of_my_girlfriend_asking_me_to/)). In order to get the whole background of this construct I recommend to quickly go through these stories.

Basically I was asked by my girlfriend to do it, because her sister was very unhappy in her marriage and was desperately looking to be fucked again.

I know it sounds very strange and believe me the whole situation was completly crazy for me, but I can´t say that I had something to complain about.

After our second encounter the relationship to Emma (GF´s sister) got normal again to a non sexual relationship. We met regularly on family dinners or in a garden outside our home city that we shared with Emma´s family. Everything was just as it had been before and also my relationship with my girfriend Sarah had not taken any harm.

Both sisters have always been very open to each other and talked abut everything which is how this situation could have evolved in the first place. For over a year Sarah did not mention that her sister complained about her marriage again and it seemed that Emma and her husband Martin finally found a way to get their sex life up and running again without external help.

This was at least what I thought until two weeks ago. It was a Friday evening and I was wathcing some Netflix when Sarah came into the living room who just got of the phone with her sister.

Now I will just briefly sum up the conversation, just to keep it short:

“Hey, remember when you had something going with my sister?”

“Uhm, yeah…”

“Guess what, she and Martin need your help, again.”

“What do you mean they both need my help? I thought Emma never told Martin that she had her needs satisfied by me.”

“She never told him. But apparently they have been talking about spicing up their relationship and Martin confessed that it was his biggest fantasy to watch his little wifey getting fucked by another man.”

“And she suggested me? ”

“Yes she did.”

“And how shall we explain Martin that it is okay for YOU that I fuck your sister?”

“Oh honey, he is aware that our relationship is somewhat different of what is commonly known as the standard.”

“So, do you want me to do it? Is it okay for you?”

“Oh come on! You already fucked her twice, what change would a third time mean? And besides that, you know I love my sister and if it helps her it would make me happy as well.”

And after this conversation it was clear that we would do it again. And even better that this time Emma and I did not have to keep it secret in front of her husband which made it easier to find a suitable time.

Only two days later, Sunday, Sarah and me drove to Emma & Martin´s house. Sarah picked up their daughter to take her on a trip to the zoo so nobody would disturb us. I hid behind a corner until their were gone so that Stepahnie (the daughter/niece) didn´t see me and ask why I visited her parents which is quite uncommon.

After the car was gone I walked up to the front door and knocked on the door. Martin opened the door and guided me inside. He thanked me that I was down for this quite delicate request of him. If only he had known what requests his wife already had brought up in the past. I was asked if I wanted something to drink and I could sense how nervous he was. To be honest I was nervous as hell, as well. I never fucked somebody in front of anyone else watching. Especially not the husband. So I answered that we should skip the small-talk part and get right into action.

We headed to their bed room. The bed had been fitted with fresh sheets, the pillows had been arranged tidily, it was the perfect illusion of a happy family bedroom made by the perfect housewife. At one corner of the room they placed a chair facing the bed. This was the spot where Martin would be sitting.

I turned to him and asked him:

“Is this really what you want? This is the last chance you have to stop this. I need to make clear that I will do everything your wife asks me for or what I want to do with her. I won´t take care of what you might think and I need you to be okay with it. If you can´t stand it any longer you will have to leave the room. These are my ruled, are you okay with it?

He nodded and sat down on the chair.

— This is where the interesting part begins —

I dont know if Emma had been listening and waiting for Martin to sit down or if it was just a coincidence, but at this moment she entered the room. Both me and Martin turned our heads around and looked at her.

She wore a red robe made out of silk which she did not tie at the front and so she also revealed the black lingerie underneath. Emma looked absolutely amazing.

Her pale skin was the perfect contrast compared to the bright red and the strong black.

Emma is a petite person in all maters. Her beautiful face covered by brown hair which goes to her shoulders. The small breasts being hold by the black bra with nice lace. Although she already gave birth to one child her body was absolutely thin. She was not sporty, but there was no fat or whatsoever at all.

The small butt was still covered by the robe, but I already knew that it looked just as beautiful as the rest of her body.

“Oh honey, you look so damn hot!”

She gave Martin a deadly look.

“Martin, shut up! This is not about you. Stay at your chair and leave us alone!”

Wow, I did not see this coming. And neither did Martin. He looked like a poor dog that someone just had yelled at.

I was now sitting at the edge of the bed straight looking into Emma´s eyes.

“But he is right, Emma. You look absolutely amazing.”

“Thank you. I just bought this set only for you today, I´m glad you like it. And now lay down on your back.”

I did as I was told to. The last two times I met with Emma to have sex with her she was a completley different person. Much more shy and not as dominant as she was now. I liked the new Emma.

Emma now began to take her robe off while doing a kind of sexy dance. But being a very white girl she had a hard time to put down some sexy moves. But I know what she wanted to achieve and in my mind gave her credits for this.

When the robe hit the floor I told her to turn around and show me her ass. She stuck out her little ass showing the tiniest thong I had ever seen. The string completely disappeared between her butt cheeks and as you might have guessed they are not the biggest. She spread the apart sohwing that there really was a string which barely covered her tight little asshole.

By now I opened my jeans and took it off. My cock was already rock hard, but still covered by my boxershorts. Although I had Emma in my direct view I could not resist to take a look at Martin. He already had his cock out and was slowly stroking it. His eyes were fixed on Emma, but she didn´t pay any attention to him even though she was facing him right now.

When Emma was done with her robe striptease she also came onto the bed and crawled up towards me. We gave each other a long and wet kiss. I placed my hands on her ass and gave it a good massage.

Our tongues untwisted and Emma began to rub her pussy on my dick.

“Get this thing off!”, she told me and helped me to take off my boxers. My dick popped out and Emma got back on it. Her thong felt so fucking good on my dick and it was just a perfect view. But since I am a huge boobs person I had to free them as well. With one quick move I opened her bra and immediately felt overwhelmed by her beautiful tits. They were so puffy and perfectly shaped with the nipples already being hard. My hands moved from her ass to her tits and I began to sqeeze them and pinch her nipples.

Emma responded with a loud moan and threw her head back.

“Oh shit, we have to be careful that I don´t cum already!”

Now usually this a sentence you would expect to be said by a man. But this time it was Emma who now stopped grinding on my dick. Whenever she came her pussy became super sensitive and it would need some time to rest before we could go on fucking.

She got down from me and turned her body around. We were now in a 69ish position and she started to suck my dick. But her body was too short for me to lick her pussy and so I “only” had the view of her ass right in front of me.

Unfortunately Emma´s BJ skills had not improved since our last encounter. I couldn´t tell you what she was doing wrong, but it just didn´t feel as it is supposed to.

I didn´t want to tell her to stop and feel bad about her skills and so I distracted myself by pulling her string to the side and slowly started playing around with one finger at her pussy. She was already so fucking wet that it easily slid into her. She made a squeaky noise and stopped chewing my dick. Exactly what I wanted to achieve.

It was no problem to put a second finger into her pussy as well. I slowly moved them in and out always taking some of her cream with me. Just when I started to rub her juices onto her asshole she shook and rolled her body to the side.

“No, I´m sorry. No anal games today.”

I couldn´t care less, because just playing around with her pussy was such a god damn pleasure.

In the meantime Martin was stroking his cock faster and faster. We could hear him moaning and groaning in his little corner. Suddenly I kind of felt bad for him and wanted to do something good for him. I told Emma to get on her hands and knees with her face into Martin´s direction.

She did as I wanted and put her ass up in the air while looking at Martin. I placed my cock right in front her pussy and slowly entered her. Her soft, warm and moist pussy wrapped around my cock and we both moaned simultaneously. My handy were firmly wrapped around her hips moving her back and forth.

Emma was so tight that if she were not as wet as she was I would have cummed within seconds. I leaned forwards to grab one of her tits. I´m such a idiot I thought to myself for not paying more attention to these absoluty beautiful pair of breasts. I knew how sensitive she was at her nipples and that I could have easily made her even more horny.

But now it was too late for boobie time. To speed up the pace I had to let go of her breast and raise my body again. I gave her ass a hard smack and let my thrusts into her become harder and deeper. With one hand I pulled her cheek to the side and took a look onto her even tighter asshole. It had a beautiful dark brown color surrounded by her pale skin which made it to such a special and exciting view. I promised myself to take care of it the next time.

Emma was now holding on to the bed´s edge as I was fucking her from behind with quite a speed. My balls kept slamming against her and from time to time I gave her a smack.

I could see that Martin was now close to cumming.

“Look into your husband´s eyes!”

In exact the moment when Emma raised her head and looked at Martin he shot ropes of cum into her and the bed´s direction and although the chair was located some feet away a few ropes of cum ended up in her face.

Being honest I expected her to be grossed out and possibly ending the whole thing at this point, but to my surprise she demanded to be fucked even harder and faster.

I reinfroced my grip around her hips and tried to get es much grip as possible on the bed. I fucked her so hard and deep that her constant moaning evolved to a loud screaming. Good thing my girlfriend took their daughter on a trip – thanks for that, Sarah!

My efforts seemed to work, because after a few more thrusts Emma´s body began to shake continuously and her pussy pulsated around my cock heavily. This was also the signal for me that my job was done and I could now concentrate on having an orgams on my own.

I pulled out my cock and started rubbing it with my hand.

“Turn around, I wanna add my load into your face!”

Emma turned herself onto her back and I got over her. She opened her mouth, stuck her tongue out and I came all over her face. Martin´s cum only hit her on the forehead and on her hair, but I added a load to almost everywhere. It got in both of her eyes, even more on her hair and into her mouth.

Relieved I let my body fall down on the bed again, but Emma was now completly blind with her face full of cum of two men.

Martin got up, rushed to the bathroom and got her a towel which she gladly took from him to clean herself up.

I also got up and went to the bathroom to clean my dick and put my boxershorts back on. I thought this was not the right situation to cuddle after sex which I usually like to do. I got fully dressed pretty quick and packed my things.

Slowly it turned to me that I just fucked a woman in front of her husband. That this woman was my GF´s sister was not the weird part about it which made my brain go up and down like a rollercoaster.

I just wanted to leave. After a short goodbye to a still naked Emma (Martin was also at the bathroom when I left) I went home and waited for Sarah.

She had a great day with her niece and was keen to get to know what had happened. After I told her what whe had done she just said:

“Well, let´s just wait how long it takes this time until my sister asks you to fuck her again!”

I couldn´t be more excited to get the answer to this question ;)

Source: reddit.com/r/gonewildstories/comments/ilw1o1/i_fucked_my_girlfriends_sister_again_this_time

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