[MF] Some mild fun with my sister-in-law.

TLDR : Managed to be naked in front of my sister-in-law again and then spent the night with her naked in bed.

CONTENT WARNING : Sorry this is only mild. Unfortunately, real life doesn’t always have a happy ending.

I thought being naked in front of my sister-in-law and getting a look at her pubes in her lacy knickers would be enough for the wank bank, (see my other stories), but it just left me wanting more.

She is quite attractive and curvy with large tits and a rounded ass. If I was single, I would probably try and hook up with her, but even a casual hook up would be too risky as it is too close to home.

She is divorced with kids and my wife, Jane, often sends me over to hers to help her out. Recently, the wife agreed I would help out redoing her bathroom. Typically, wife had no concept how much work that is and thought a day would easily cover it. Once I worked out a plan of attack, I considered at least a week to a point it could be left usable and go back to finish off another time.

She doesn’t live too far away, but getting across town in the mornings was a pain in the arse, so by day two I started to stay the night so I could make an early start and work quite late. Her kids were with their dad due to limited bathroom facilities so I used one of their beds.

The big advantage of staying there was to feed my pervy appetite. Each night she would come home from work and change into comfy clothes which meant a big baggy t-shirt, joggers and no bra. Her heavy saggy tits rolled about behind the fabric as she moved. Her nipples made prominent lumps and appeared to follow me around the room. When she bent over, the weight of her breasts stretched the material down towards the floor, dragging on the neck line and exposing her full cleavage invitingly.

I couldn’t help but stare at them all the time and desperately wanted to see them properly in the flesh. It almost become an obsession.

On the Wednesday I had removed the bathroom door to get the old bath out and left it off to get the new one in the following day. The following morning there was some fun. I woke up and needed the usual morning piss. The house was dim in the early morning light and I couldn’t hear any movement. I sleep naked, so headed off to the bathroom along the hallway not bothering to cover up. I turned on the bathroom light and stood at the toilet with my back to the empty doorway. I stood a while waiting for my cock to soften enough to point in the right direction to pee.

Just as I finished peeing I heard, “I recognise that ass,” from behind me.

I turned to see SIL in the doorway.

“Don’t worry, I’ve seen it before,” she said, “And I enjoyed seeing it.”

She was wearing the same baggy t-shirt as she had worn the previous night. But now she wasn’t wearing any joggers. Her tits limited how long the t-shirt hung down at the front as it strained over them making it arch up exposing the creases at the tops of her thighs and a hint of pubic hair in the shadow cast by the bathroom light.

“Hurry up,” she said, “I need to go too.”

As I washed my hands I felt her enter the room behind me and heard her sit down. Immediately was the sound of gushing piss into the bowl. I was naked in front of her and she was pissing with me in the room. My cock wasn’t even completely soft yet from being piss proud and I could feel it stiffening again. As much as I wanted to show her my cock getting fully hard I though it best to dry my hands and leave the room.

I stood behind my room door and listened as her stream slowed down to a tinkle and then stop. As the toilet noisily flushed I started to get dressed. I left my room. By now the bathroom was empty and the light was off. I went down stairs and SIL was in the kitchen making cups of tea. She was still only wearing the t-shirt. I stood by the breakfast bar as we chatted and she busily prepared our drinks and started some breakfast. I watch her as she moved about. The hem of the t-shirt struggled to keep her modesty and flashes of her triangle of black curly hair constantly drew my attention. The highlight was when she bent over to tend the grill. I got a good look and the creases at the top of the backs of her thighs crowned by curvy ass cheeks and in-between the tops of her legs, a bare pussy winked at me. Her ass and pussy lips were smooth and hair free and a wonder to see.

We sat at the breakfast bar opposite each other. The worktop shielded her lap but I pleasured in seeing her bust hanging down and resting on the worktop. When we had finished I let her go upstairs and use the bathroom before I would make a start. I sat there lamenting on what I had seen. Another desire ticked off the wish list.

Nothing else happened until the Friday. She was late home from work as she had to pick up her kids. I was still trying to get things finished off to be able to leave it usable. I eventually finished and went downstairs. I was disappointed to see she was still in her work clothes, A smart blouse and skirt. The skirt seemed too tight and exaggerated her curves and the blouse and bra presented a lovely cleavage but I wanted to see them set free and flopping about in her t-shirt again.

She had been busy with the kids and sorting out some dinner. Luckily after getting the kids to bed she then got changed and came back down stairs in just another t-shirt and nothing else. This t-shirt was a bit longer so I couldn’t see much but I enjoyed the shape of her breasts and nipples in the fabric.

I had planned to load up my tools and leave. There were no spare beds now and I had finished what I had planned to do. SIL explained she had spoke to my wife and they had agreed I should stay so that on Saturday I could paint the room too. I asked where I was supposed to sleep.

“We’re adults,” she explained. “We can share my double. Jane’s idea. She trusts us.”

“She might,” I replied, “I don’t”.

“I’ve seen you aroused. I’ve even seen you produce some precum. You managed to restrain yourself then. You can do it again.” She said.

“Not that I don’t think you are attractive, but you do understand, I can’t control the fella.”

“I thought you was turned on by me.” she said.

“I was.” I admitted, “but I promise you will be safe tonight.”

We had a few drinks in front of the tele before going to bed. She slipped under the duvet straight away in her t-shirt and settled with her back to me. I undressed and got in along side her and turned off the light. She wiggled herself back towards me until her butt touched my hip and her cold feet were on my leg.

“Warm me up a bit, ” she said.

I rolled on my side and we spooned together. Her bare ass cheeks pushed into my lap and her cold legs pressed against mine. I rested my hand on her hip on top of some rolls of material that had been pushed up to expose her ass. I laid there imagining slipping in my cock between her cheeks. Was that what she wanted? Was this a test or an opportunity? Her breathing slowed as she fell asleep and my common sense took over from my imagination and I tried to ignore how close my cock was to her pussy.

Dawn light bathed the room when I woke up. We were still spooning. Her butt was still pressed firmly into my lap but my arm was now draped over her with my hand resting on her sprawling bosom. They were warm and soft but unfortunately still covered in her t-shirt. I stayed still, making the most of the accidental hand placement and become aware my morning glory was firmly pressed into her butt cleavage. It took all my concentration not to grind it on her.

After a short while she turned her head around a bit to see if I was awake.

“It feels like you need the toilet,” She said and then wiggled her ass on me but didn’t move away.

My cock started throbbing with anticipation. My cock was taking over and could easily get me into trouble and was clouding my judgement. My mind was trying to move my hand away but my cock wanted me to grab her fantastic tits tighter.

“I won’t be able to go for a bit,” I replied.

She giggled and still didn’t say anything about my hand on her tit. We lay there a bit longer with my hard cock pushed between her ass cheeks and my hand resting on her mommy saggy tits and my head trying to decide if I could get away with fucking my sister-in-law.

“I told Jane about the other morning when I saw you in the bathroom,” she said after a while. “She said you got really turned on the other time you exposed yourself to me.”

“I got turned on the other day in the bathroom too,” I replied.

“I saw.”

“And when you were in just your t-shirt.”

“I was trying to be subtle, but wanted to flash you.” She said. “It was thrilling to think you could see me.”

“I did see you and it was very hot”

“Jane suggested you share a bed with me. She knew you couldn’t resist being naked with me in bed.”

“She knows me too well. Thanks for letting me”

“I’ve enjoyed it” she said.

We lay there a bit longer, still with my hard cock pressed against her and my hand on her breast until noises could be heard from the kids bedrooms. I dragged my hand up the side of her breast and down to her hip. Her flesh was bare and soft. My finger tips now inches away from her pussy and my cock twitched. I paused a bit giving it a final consideration but declined and rolled onto my back and she rolled onto her back too. I slid out of the bed stood there while she watched me. She was staring at my cock that was throbbing and starting to ooze precum from the tip.

Noises from the kids got louder so she tossed back the duvet. Her t-shirt was up around her belly exposing a neat triangle of pubes above her smooth pussy. Her neat folds of outer pussy lips disappeared between her legs. Her breasts flowed to her sides constrained by the t-shirt. Her nipples made large mounds and cast shadows onto the fabric. She paused to let me look at her before she swung her legs out the bed on the opposite side to me and I watch her t-shirt fall down over her bubble butt.

Still naked, I watch her bed down for some joggers and revelled at the sight of her pussy from behind. Puffy lips slightly parted looked so inviting. She pulled up her slacks and the waist band popped over her ass and the show was over. She walked around the bed and paused as she passed me and looked down at my cock again.

“Another life eh?” she said. “It would have been fun.”

I nodded.

“Now get back in my bed and sort that out.” and she left the room.

I still haven’t seen her tits!

Source: reddit.com/r/gonewildstories/comments/z1q8oc/mf_some_mild_fun_with_my_sisterinlaw