I have always had a fancy for my sister in law. My brother, the lucky swine, has been married to Lilly for 10 years and it's obvious why he married her. She is one of the wealthiest women around today. See's made her money in tanning and beauty salons and when they first got married she was really fit. Like most women in their late 30's she has done a lot of gym work and is still really fit today.
I have always wanted to fuck her for since my brother first met her but I have never had the chance to and she is a little too straight to go behind his back. I don't want to go behind my brother's back either but I'm pretty fixated on her these days and when a glimmer of an opportunity came up I took it.
I was invited to a friend's wedding and my sister in law and her hubby my brother were on the guest list too. It all taking place in a lovely big old church out in the middle of the country and the reception to place in a big hotel in the country as-well. I had brought my girlfriend with me and we were all really enjoying ourselves.
It was late on when the bride and groom had left and I needed a pee. The men's was busy but I had noticed earlier that all the cloaks and coats had been put in a guest bedroom on the ground floor. I thought I could nip into the bathroom there and jump ahead of the queue so to speak so off I went.
However, just as I turned into the corridor I noticed my sister in law going into the room. I innocently followed, opened the door and went in. Lilly hadn't switched the light on so neither did I. Lilly had obviously come to the same idea as I had as I could hear her peeing into the loo. She stopped and I heard her tear off some toilet roll obviously to wipe her-self and then her zip being pulled up on her skirt the toilet flushed and out she came into the room and went towards the door.