I haven't had a cordial relationship with my sister in law ever since I got her older sister pregnant. They did not have any parents left and my wife took care of my sister in law her whole life. I got married to my wife and my sister in law always felt that I stole her sister from her. Her name is Ann. Now Ann also got pregnant and got married but she and her husband split up and seeing that she had nowhere to go my wife took her in our house with her child.
Since Ann and I never really had a great relationship to start with, there came a day when our personalities clashed and we ended up having a big fight and this ended up with us totally ignoring each others presence for years. We just chose to pretend that the other didn't exist even though we lived in one house.
Now Ann has always been a chubby sort of girl. This chubbiness affected her overall outlook of herself and her self confidence was really really low. Then she started working out at the gym regularly. She lost baby fat, got toned muscles and all in all she looked really fantastic. She was also much happier with her self. Throughout this transformation I have been casting furtive glances at her as she got sexier and sexier and one day out of the blue she just started talking to me. Little by little we started talking, first small phrases until it got to the point where we can carry on a real conversation.
When she's in the house she has this habit of wearing old loose shirts with tight fitting short shorts. I can see the outline of her panties whenever she is walking around and sometimes when I stare and she sees my stare, she sort of smiles amused and carries on walking around. Sometimes she drops stuff and when she bends down to pick it up, her t shirt hangs down and I'm treated to a view of her breasts. I honestly think that she is teasing me and it's driving me crazy.
I'm having crazy dreams of fucking her hard and I resolved that I will do whatever it takes to nail her. I started slow, a touch here, a touch there, a compliment here. She also responded with little touches, pokes, sort of daring me to do more. Now all this I had to do clandestinely as my wife has an eagle eye when it comes to me and she no idea what has been going on between me and her sister.