I persuaded my friend's sister to be my temporary partner - unlimited access

I was in a relationship with a girl who wasn't cutting it in the bedroom. I told my friend about my situation and he offered up his sister. I was hesitant at first, but when I saw her, I knew I had to have her. We got down and dirty right there, with me eating her out and her giving me a mind-blowing blowjob. We went at it for hours, with her riding me cowgirl style and bending over for some hardcore doggy style. She was a sex goddess, and I was more than happy to give her unlimited access to my cock. The orgasms we had were off the charts, and I knew I had made the right decision. I couldn't wait to see what other naughty tricks she had up her sleeve.