Had a risky sex with my wife's friend

I had a short fling with my wife's friend. Let's call her K. She lives in the adjacent tower in the same complex and we have fucked a few times. She along with my wife and one more friend (let's call her N) meet downstairs daily evening for walk and a bit of chit chat.

That evening I was also downstairs due to some work and K saw me while she was on her balcony. She gave me a call and asked me to come up for a quickie before she comes down for a walk with my wife and N since her husband was going to come back late from office that evening.

Immediately i went to her house. She opened the door and took me to her bedroom. K has an older daughter and a younger son who is just 2 years old. Her daughter was playing downstairs. Son was watching cartoon on TV in the hall. He was glued to the TV and didn't bother anything.

Once inside bedroom, we immediately got down to business. She pushed me on bed and climbed on top of me and starred smooching me and dry humping on my cock. Then i picked her up and we both removed each other's clothes and i started fucking her in missionary on the edge of the bed. We were fucking very near to the French window. The curtains were drawn close.

While we were fucking she got a call from my wife. I knew this will be related to the evening walk. I asked her not to pick up but still she did it.

It turned out my wife and N were standing below her tower and were waiting for her. I just moved the curtain a little and saw both of them. Even K leaned a bit to see and gave mixed reaction upon seeing them. She told my wife the she will be late and will come only after few minutes. Both of them (my wife and N) were enquiring about the reason for delay but K told that she has some pending work to complete.

After the call was cut we resumed our fucking and we both were peeping through between the curtains to see my wife and N waiting downstairs and taking short walks. It was unreal. My wife waiting downstairs and I'm fucking K watching her. She had no idea what was going on upstairs.

Finally after few minutes I nutted inside K while still watching towards my wife and N. (She has copper T installed which i already knew)

After we were done we washed ourselves and i went out of her home. I went to a friend's home who stays in the same building on the pretext of something so that K can go downstairs with her son and the 3 women can go for a walk while her son will play with the older daughter and her friends.

I've had many encounters with different women but this was one of the most memorable.