My sister in law [F] watched me [M] masturbate

My gf and I have been sexting each other all day yesterday. She had her periods all week, and last week we couldn’t be together because of work. Needless to say I couldn’t think of anything else than fucking her like crazy.

We’ve been together for a year. she’s 26 and pretty small (5’5″), have a matte skin, black hair and if you ask me, perfect ass with a tight pussy on top of it.

As I drove home she calls me and tells me that her sister will be here tonight as she were driving to her friend’s, and she has been stuck in traffic so she’ll be sleeping at ours.

I’ve never met her, but from what my gf told me they really bonded together and share a lot. She’s 21 and still a student, and on photos she looks like a taller version of my gf, maybe more nerdy and with curly hair.

The night goes pretty well as we’re being introduced. My gf and her talk about things sisters talk about, so I’m not really part of it. Although I could understand from the contexts that she never had a boyfriend and her class if full of girls (she’s studying politics), and the few guys are douche. Around 10pm we start preparing for the night, as my gf and I work today. Our apartment only have a convertible sofa so we put an inflatable bed next to ours.

I started getting rock hard again when my gf and I were putting our pajama, but she quickly turned me down as we wouldn’t fuck with her sister right next to us.

So we went to bed, but I couldn’t get my hands of my gf for a very long time as after I checked if her sister was sleeping, I started to discretely touch her boobs and ass. She was half asleep, and she loves it when I do that to her. A few minutes in and I move my hand between her legs. Her tight pussy was hiding below a small bush, and I could feel her being wetter and wetter as I slide my finger along her slit. Before I knew it, I was already fingering her. As much as she enjoyed being pleasured she didn’t want to be awakened. She removed my hand from her pussy, and swiftly rolled in the blanket.

Now apparently I wasn’t discreet enough, or my SIL wasn’t sleeping at all, but I could hear noises coming from the inflatable bed after my gf rolled over. I kind of freaked out because I thought my SIL heard us.

I couldn’t really think straight at this moment. I whispered “are you awake?” and she whispered back a quick yes. I felt uncomfortable for a few moment, knowing she’s awake. I then wisphered “did you hear us?”, and she said yes once again.

I really needed to drink a glass of water at this moment to think about something else, so I grabbed my phone to have a bit of light. I tried to avoid looking at her, and soon realized I was walking in front of her with a raging boner in my pants. I sat on the nearest chair to hide my boner for a while. My heart is still racing thinking about the next part. She asked me if her sister was asleep. When I confirmed she then asked me if she could see “it”. I asked back if I she meant what she said, and she wisphered “nevermind” in a embarrassed tone.

After I convinced myself that it’s nothing and she’s just curious, and my gf is asleep, I then let my cock out of my pants. It quickly became harder as I knew she was about to look at my it. I unlocked my phone to have a bit of light, and saw her eyes looking at my penis for a moment. I then started rubbing my cock to stay hard (I was quite embarrassed too), and as I rubbed, I actually thought about how horny the situation was. I masturbated a little bit harder and asked her if she liked it. As an answer, I saw spreading one leg out of the blanket, and started fingering herself. That moment was hot as I knew it but couldn’t see her wet pussy.

I really wanted to do more, but eventually I put my dick back in my pants while whispering that we shouldn’t go too far.

This morning I felt light headed thinking about what I had done the night before, and I fear she ever tells my gf and the day I’m going to meet her again how awkward it would be.

Source: reddit.com/r/gonewildstories/comments/dp4z1i/my_sister_in_law_f_watched_me_m_masturbate

9 comments

  1. A tight pussy on top of her ass?! Like, kind of around the small of her back?

  2. In my country (US), we have a term for people like you. *A ballsy motherfucker*

    Your gf sleeping right next to you both.

  3. Sister-in-law?? Nope. You’re not married. Only your brother’s wife can be your sister-in-law.

  4. for some people, they like to watch. Happens to be your sister in law who likes to watch. Maybe next time, she might join you :D

  5. I would have made her have the inflatable bed out in the living room lol. It’s SEX TIME

  6. I had a very similar experience after high school. I was with a group of friends and we were all crashed in a room at a ski resort. My girlfriends older sister was with the group. My girlfriend and I were on the floor in our sleeping bags. In the middle of the night she woke me up and we started fooling around. Everyone in the room was passed out and asleep. She opened my sleeping bag, slipped down my shorts and started sucking my cock. After a couple of minutes I looked over and noticed that my girlfriends sister was awake and watching us. When we made eye contact, she motioned for me not to say anything as my girlfriend had no idea. She continued working my cock another
    couple of minutes until I unloaded in her mouth. She covered me up and went to the bathroom. I looked over and her sister quietly laughed, smiled and gave a thumbs up.

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