I’m still waiting to feel bad about it. I was staying at their place while on a trip and she was out with friends for the night so it was just me and her bf. We were drinking some wine and we realized we had a lot in common. We made fun of my sister and her weird quirks that get on our nerves, like being super anal about decorative hand towels and how she won’t eat leftovers.

One thing led to another and then I was on their couch with his cock buried in my pussy. Our kisses tasted like red wine as he pumped into me. He kept telling me how tight I was, how he loved how wet I was for him.

He made me fucking blush while I was on his cock, he was amazing.

I came twice on his cock, making a complete mess on his cock. He came inside me, groaning my name.

We cleaned up and we haven’t spoken about it since, but I can’t imagine this is a one off thing. We both liked it too much to stop, even for my sister’s sake.