My Friend's Sister

I've been a friend of this guy and his little sister for at least ten years. Over the years, his sister and I have always flirted with each other. We never acted on it because he is very protective of her. One late night after he moved out, I was riding past her house when I noticed that she was still up. I stopped and we chatted on the porch for a while. I finally acted on my years of flirting and she wanted it as much as I did. We had sex until the sun was rising. We had to stop when my girlfriend started calling me repeatedly, because I was running late to take her to work. Needless to say, we both enjoyed our time together, but we have not done it again YET! I know my boy really loves his sister and would be pissed if he found out, but the stuff we did and how we did it that night, I would definitely do it again, and again, and again.

— Marcus, 26