Knulla mig och kom inte inuti - min styvsyster sa detta och lovade att inte avslöja mitt fusk

My stepsister came up to me and said that she knew about my cheating on my girlfriend, but she had an offer for me. I have to fuck her and not cum inside. And so she starts jerking me off, I take off her short shorts, move her leopard print panties to the side, lick her juicy pussy and start fucking her. But in the end I can't hold back and I cum right inside her tight pussy..