My wife’s sister (M/F)

Erick and his wife Sylvia had met when they were very young, and he was quite inexperienced. They fell deeply in love and like many couples, experienced an excellent honeymoon phase that burned hot and unfortunately fast.

Adrianne was Sylvia’s younger sister. Erick noticed early on that they looked quite alike. Still, Adrianne was shorter, a darker complexion in both hair and skin, and her eyes were more black than the deep dark brown of his wife. The most significant difference much to Erick’s delight was that Adrianne had an impressive massive rack that dwarfed her older sister’s solid C cup. These C cups were not apparent. Several times her wife joked about how her sister had been blessed with the most chest.

“what no way!” Erick would say. “Even bigger than your peak mommy titty milk titties?”

Sylvia rolled her eyes. Even with the weight gain from being pregnant and the swelling of her breasts while breastfeeding, they still never got as big as her little sisters.

“Fucking perv.”

To Erick’s credit, Adrianne mostly dressed down and seemed to wear a lot of sports bras. It wasn’t until her 21st birthday when they convinced her to dress up and celebrate at a club that Erick had seen her full figure and been completely blown away. Her heavier figure translated to a much more thicc figure in her little black dress. Her breast were escaping the low top of her skimpy dress. And after many shots, she grinded on Erick for at least two songs. Sylvia did not seem to mind at first, but as Adrianne began to really grind into Erick’s crotch and get playful with him, Sylvia danced her way in between them. Sylvia’s ass slid across Erick’s rock hard boner and noticed that her sister was dragging her skirt back down over her ass, which had significantly ridden up. She glared at Erick.

“Holy shit, your sister does have some big ass titties,” Erick said, slurring a bit as they lay later that night.

“I told you! I’ve always called her incognito titty”, Sylvia said. But that was the end of that. It wasn’t until years later that Erick feeling the sting of lackluster sex life that he began to notice that Adrianne would dress a lot more skimpier.

“She doesn’t have a boyfriend still?” Erick asked Sylvia one night after she had left.

“I told you she is practically sexless, she has no interest in sex.”

“I can’t believe it. If it’s true, there’s no way you guys are related because you had a voracious appetite.”

Sylvia rolled her eyes. She had noticed the ‘had’ but let it slip, not thinking much of it.

“I’ve told you this before she had one boyfriend in high school, and he was such an asshole mind fuck she practically turned lesbian. Besides, before I met you, I never cared for sex either.”

Erick’s eyes glistened as he went in for a passionate kiss.

Sylvia pecked him and said, “I’m tired, we need to go to bed.”

That night was the first time Erick had jerked off thinking about sister in law. She had purposely hiked up her own skirt, so the only things that separated his cock from her ass were his pants and the very thin fabric of her thong. She had guided his hands to grip her hips hard and pushed back deeper.

​

By now, Erick and Sylvia lived about four hours away for work and would periodically visit. Adrianne had a good job but still no boyfriend and still lived with her mom and grandma. She was so great with children she loved babysitting her nephews. She was getting the kids ready for bed one night, and in the past, they had snuck around to get some really hot fucking done. Now they just Netflixed with no chill.

After an episode of some random sitcom, Sylvia laid down on the couch with her legs over Erick’s lap and put a blanket over her. Even though Erick massaged and slowly groped his way up her legs, she fell asleep and was softly snoring. Hard and feeling horny, Erick began grinding her feet on his cock. Her feet were beautiful, and she had filmed a foot fetish video with one of her girlfriends when she was younger for some dude in a hotel. Erick was wondering what happened to their adventurous lustful marriage when Adrianne came in.

“What you guys watching?” She was dressed in a long T-shirt and some incredibly tight small gym shorts. He could tell there was no bra under her shirt.

“Just some Netflix, thanks for putting our kids down.”

“Yea, I love those little fuckers,” She said, playfully slapping his arm. “You gonna make room or what?”

Erick was a little annoyed the couch was huge and did have room, but there was a recliner nearby that was very comfortable.

She noticed his face and smiled. “Come on, don’t be like that, bro.”

She squeezed into the corner of the couch, grabbed the blanket adjusted her self. Erick was highly aware of her bare legs and thighs touching his. His boner was still rock hard against his shorts. Adrienne got extremely close and smiled.

“W-what are y..” Erick began.

“Chill, I’m just grabbing the remote. I wanted to show you guys this show I started watching it’s called Mrs. Fletcher. I think you guys would really like it.” The show was excellent. The premise was that Mrs. Fletcher’s college-aged son was leaving for college. She was coming to the realization that now that her son had moved out, she was very lonely and looking to get back into relationships again.

So far, only two episodes were out, and Erick thanked her for introducing him to the show.

“I totally feel that,” Adrianne said channel surfing now.

“She’s so damn horny.” Erick said playfully.

“Yea, that’s what I mean!” Adrianne said, smiling at him.

“But, your sister said you weren’t interested in sex.”

“The fuck! Yo, fuck her! That bitch is such a liar.”

“So why don’t you have a boyfriend?”

“Ummm, because dating is fucking hard, okay.” Adrianne began telling her dating history. Although she did want sex, she was awkward and not that confident, her first relationship had really shaken her up. And although she wanted sex, most guys wouldn’t stick around waiting for her to open up.

“It’s getting to the point where I’m just going to be a hoe.”

“I could help you out with that.” Erick said in a playful tone. “Just kidding, just kidding.” He said very quickly nervously, looking to see her reaction.

“Wait, you like me?” She said, her eyes wide open with curiosity.

“Well, uhh yeah, you’re like super hot.”

“You’re just saying that cause you’re my brother in law,” she said.

“No way like look at this massive rack.” Erick said lightly, brushing against her chest. This was when Erick noticed just how erect her nipples were; they were so hard and poking sharply against the thin fabric. “You know I never believed your sister when she said you had the biggest tits in the family.”

She giggled and said, “When did you notice they were huge?”

“Your 21st, you were wearing that tight dress and shoving them in my face half the night. Then dancing with you was so hot I’ve jerked off think ing about that night.”

“Oh my god! Shut the fuck up! You remember!” She said in exaggerated disbelief. “I can’t believe you remembered. I was so tipsy I didn’t realize what I was doing. There’s no way you jerked off to me.”

“I’m hard right now thinking about it.”

“I don’t believe you.”

“See for yourself,” Erick said, nudging closer and pushing his wife’s feet out of the way. He was so scared he had taken it too far; his heart was pounding.

She turned away to watch the TV, and Erick thought he pushed his luck too far. But in a quick motion, she reached over and squeezed hard.

“Oh fuck,” she moaned softly, eyes not moving from the TV.

“Yea your titties are amazing any guy would be so lucky to be with you! Fuck those other assholes if we were together I would shower you with appreciation and affection.”

She turned her face was so close. “Don’t lie, please,” she said.

“I’m not lying.” She moved in, and they began to kiss softly; her hand began stroking over his pants.

Erick had forgotten the joys of a new love; it was so exciting even holding her other hand excited him he decided to lead it to his crotch. Slowly she pulled down his shorts and started massaging his balls and gradually rubbing his dick.

“Oh, fuck.” She moaned softly. As he began kissing deeply into her neck.

That’s when they noticed that Sylvia began to stir.

“My phone needs to charge.” She said half-asleep.

“Sure baby,” Erick said, trying to control his breath he was practically gasping with excitement. Adrianne had frozen completely, but as Sylvia kept her eyes closed and just adjusted her couch pillow, she began to stroke again.

Erick’s eyes widened. “Me and Erick are going to watch a scary movie you want to join us, sis?” She said as she began stroking faster and faster.

“No thanks, have fun.” She said as she rolled over and fell back to sleep.

“What the fuck was that?” Erick mouthed.

“Fucking hot is what I call it,” Adrianne said, really getting into it. She pulled back the covers and stared at the hard cock pulsing with pleasure. She grinned and pulled one hand away and grabbed her sister’s foot and began slowly massaging it.

“STOP,” Erick mouthed half horrified half trying to hold back from exploding.

She squeezed on the inside of the foot, and Sylvia moaned softly, “Mmm, that feels good, but I’m just so sleepy, baby.” To Erick’s relief, she pulled her feet away. Leaving Adrianne to focus on the cock and balls. She slowly sniffed the cock and began nuzzling.

Erick exhaled so slowly, trying his hardest not to wake up Sylvia.

As Adrianne’s tongue came in contact with Erick’s dick head now glistening with pre-cum, they heard someone creaking down the stairs.

Quickly Erick moved the covers back over them, and Adrianne sat up. She did not move one of her hands, though.

Their mom stepped in to say good night. Erick thought that was it, but then she sat down on the recliner, making small talk. To Erick’s horror, Adrianne started slowly stroking again. From the recliner, her mom would’ve been able to see, but the room was dark, and she was paying attention to the TV.

“I can’t stand this scary shit ya’ll be watching,” she said.

“Well, Erick is really brave, so I feel safe watching.” Adrianne grinned, picking up speed. Erick was so sure her mom was going to notice the movement under the cover. But Adrianne kept up a slow, steady rhythm. Erick withdrew from the conversation, trying his best to keep from cumming.

It was no use. His wife sleeping next to them feet right next to his dick, getting stroked by her little sister while her mother made small talk was too much. The thick and steady streams left his body, and he silently quaked and shuddered. It splashed Adriane’s hand and the blanket.

Shortly after, her mother kissed Erick on the cheek goodnight and said she was glad to see him. Adrianne rolled with laughter.

“Your face was fucking priceless!!” she said. Erick was still speechless, trying to recover and make sense of what happened. She quickly kissed him goodnight and went upstairs.

Source: reddit.com/r/eroticliterature/comments/grxnn0/my_wifes_sister_mf