Had sex with my wife while her sister "watched" [M/F] | 2016

This past weekend my wife Amy (27) and I (also 27) were at her parents' land in northern Minnesota. There is a small cabin on the land, but it is really dilapidated and run down. It only fits a couple people comfortably for sleeping, so her parents sleep there. Anyone else visiting for the weekend can sleep in a camper (which is actually pretty fucking nice).

This past particular weekend, Amy's sister was also visiting, so my wife and I slept in the camper for the weekend with her. There is not much privacy, and everyone's stuff pretty much intermingles with everyone else's. You get pretty accustomed to a smaller social bubble when you are in tight quarters like that.

Amy's (younger) sister is beautiful. She is 24, fresh off of her first year as an elementary school teacher, and still living at home. She is very petite but with fairly large boobs (D cup), and a sandy / dirty blonde hair. She is 100% drop dead gorgeous, but she is wayyyy too uptight. She is really just... blah. Not much of a personality. And not that much fun or bubbly. Just very vanilla.

Amy, my wife, is not as beautiful as her sister. She is in the last month of braces, has red hair, and is generally more average looking. But I fucking love her body. B cup tits that point straight ahead, an ass that makes you go back to the bread aisle to see it a second time, and a pussy as pink as a highlighter when you get her ready.

One morning at the cabin, we were all rousing awake with the sunrise. I found myself with a morning wood, and a wife that decided to push herself in to me and assume the position as the small spoon. What a dangerous combination. She felt my dick and pushed a little harder it to it, and did an ever-so-slight back and forth with her hips. Our little sign.

I slowly reached down with my hand and positioned my dick on top of her pussy, with her pajamas and thong still in place. I started slowly kissing the back of her neck and let her grind slowly in to my hard cock. We were trying to be as quiet and slow as possible, knowing her sister was on the other side of a fairly wobbly trailer.

Before too long, she reached down and pulled her pajamas and thong down past her tight ass. I pushed the shaft of my dick against her asshole and shifted my hips ever-so-slightly to push myself across her ass towards her pussy.

When the head of my cock hit the back of her pussy lips, I could already tell this was the wettest she had ever been. I continued pushing, and the head of my dick was on top of her clit. I stayed there for a split second, and pretty soon she was grinding herself as hard as she could in to my 6" dick. Every time she pushed, I could feel how wet and warm she was down there.

On one of her thrusts, she went a few inches too high (probably on purpose), which allowed my dick to point straight towards our heads. She came back down, and my dick slipped right in to her tight, wet pussy.

I slowly pushed myself in and out, in and out, in and out.

I kept kissing the back of her neck.

It was getting hot under the covers.

Right when we were getting in to it, her sister moves to get up and out of her bed. I immediately pull out, and act as casual as I could, even though my face (and hers) were probably flushed as hell. Amy and her sister talk for a few minutes about the storm the night before, and cumming seemed all but lost.

Pretty soon her sister is involved in her phone, and Amy reaches back down, wraps her soft hand around my dick and positions it outside of her lips. She then slowly grinds herself on to me, wrapping her warmth around me while her sister is a few feet away.

We go at it for a minute under the guise of covers, and suddenly her sister looks up. I was mid hump, so I couldn't move. She looks up to start talking to Amy about an old family friend she came across on Facebook.

Amy, while talking to her sister, starts squeezing her vagina and slowwwlllllyyyy going back and forth. While holfing a conversation with her sister.

Two or three seconds later, and I can't take it. I came in to my wife with 5 or 6 long, solid streams of cum. While she was holding a conversation with her sister, face to face. It was the longest orgasm of my life, and one of the most intense.

I don't think her sister noticed, but part of me thinks she did, which turns me on like nothing else. My wife and I have talked about that morning a coupe of times, and wether or not her sister knew. Each time it ends up with us mutually masturbating to the thought of being that intimate with someone that close.

Someday, I hope it goes to the next step.