I had a talk with his mother about this and she laughed it off and told me that its nothing that they are just very close and she loved to tease him! The sisters wanted me to fuck them while their parents were somewhere in the house! I slammed so hard into her! My sister was naked except her green striped stockings, she sat on my mouth with her pussy and I got to taste her juicy vagina. Watching my girlfriend and my sister kissing and swapping my cum is amazing! I unloaded my balls into her pussy for a creampie as the beautiful sexy little blonde watched!