First time with my tanned step sister

After a long day at work, I found myself back home alone with my new girlfriend. It was just the two of us, and I couldn't help but notice how hot my step sister was. She was a stunning brunette, with curves in all the right places. I couldn't resist the urge to see her naked, so I came up with a plan. I asked my girlfriend if she would be okay with me hooking up with my step sister. To my surprise, she said yes. So, I went to my step sister's room and asked her if she would like to join us. She was hesitant at first, but eventually agreed. We all got naked and started having a threesome. It was a wild experience, and I couldn't believe how good it felt. I was glad I took the risk, and I know I'll never forget that night.