Help! I Feel Terribly Guilty After Doing This ‘Dirty Thing’ with My Stepbrother – Lady Narrates

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My stepbrother took me to his gym so I could join up, but we ended up having mind-blowing s*x at his flat instead. Our parents would be horrified. My mum was already divorced when she met his dad, who was also single. They fell in love and got married seven years ago.

I am 21 and her only daughter. My stepbrother is 29. He had already left home by then but he often visited so I saw a lot of him. I have always liked him and he was kind to me.

Then he got a girlfriend and we saw less of him. That relationship ended three years ago and he started to come round to our house more. I was moaning that I did not get enough exercise now that I have an office job so my stepbrother persuaded me to join the gym he goes to.

He arranged to take me there one Saturday afternoon last month. He introduced me to the manager and I took out a membership. It was all very friendly. My stepbrother then suggested going for a drink to celebrate and we spent the rest of the afternoon in the pub.