Fucking my wive's sister

I had been married for about an year and all this time I did not think about any other woman other than my wife we loved eachother and our life was going fine , about an year later my wife got pregnant and we were waiting for our first child.

When childbirth got closer her sister came to our house to stay with her sister for a few days I had known her sister to be beautiful and sexy as well but I had no intention of reaching where I ended up.

One night I came late from office and as was usual the door was open I went inside and closed the door and went to our bedroom my wife was asleep , I went downstairs as I did not want to sleep, 
I saw a dim light coming from the living room I went to see who was there , it was my wife's sister watching tv .

I watched from the door as she tuned on a channel playing a sex movie and as I stood there she slowly reached her pussy and started rubbing it .

I started feeling horny almost instantly as I had fucked for almost a month now, I kept watching as she rubbed her cunt watching the movie.
Then she got up and I only had time to get aside or be seen, she came to the door and locked it from inside I was too horny to go and sleep so I went to the backyard and found a window to peep through I was now facing her from behind the window .

She had pulled her pyjamas down to her knees and was fingering her pussy I kept staring at her shaved bliss hole as my penis stood erected .
I could wait no longer so I decided to give her a surprise our living room had a backdoor which was always locked from outside , I brought the key and without making a single sound unlocked the door .

As I entered she still had her hand rubbing her pussy, she sat there on the sofa ,shocked with her pyjamas down on her feet , I did not say a single word and went straight to her grabbing her arm and started fingering her pussy and kissing her she did not protest but she was too shocked to enjoyed all of this.

I finally let go of her and stared at her as she stood there half naked .
I started undoing her shirt buttons revealing her round breasts and kissed her wherever I could.

Finally I took my own clothes off , I talked for the first time as we both stood naked in the middle of the dark room .

My penis stood erected and I made her kneel bringing my penis in level with her mouth she was reluctant at first but learned quickly and gave it a marvellous suck.
I reached for her cute breasts and took one of her nipples in my mouth sucking hard as I could while my hands played with her ass feeling its softness and warmth.
By now she was moaning with joy , I kept sucking until I was satisfied and then kissed all her body from her breast to her belly and reached her pussy down her belly I rubbed her pussy hard with my hands making her cry and then teased her with my tongue she was getting wild with joy and both of us could wait no longer.
I got up grabbing her buttocks and swung her in my arms taking her to the sofa .

I laid her down and fingered her virgin pussy one last time before covering her body with mine, I guided my penis to her pussy hole and as I entered her she started moaning loudly and not before long I knew she could not take my Penis inside her instantly.

I took my penis out and lubricated it with a cold cream .
This time she managed it and I inserted the total length of my penis inside her , brought it out and went inside again.
I took it out when I started drawing to the end and swung her around making her sit in a doggy position with her ass facing me.
I rubbed her ass slapping it once , just to make her ready ,
Then I parted her buttocks and slowly guided my penis inside her asshole she moaned at first but I went on as far as I could.

Then I took my penis out and made her suck it , she sucked until it ejaculated spitting loads of white fluid on her face, She took it in her mouth sucking the remains off my penis .

Then we separated and I gave her a final kiss on her lips , before I went to sleep.