I was having sex with my beloved girlfriend at her house when... her older sister caught us in the act! After seeing my big cock, the older sister started tempting me with her huge breasts! I love my girlfriend, but I can't resist when someone with my ideal massive tits comes at me! What's more, unlike my girlfriend who always insists on condoms, she's okay with raw sex and creampies! Even though my girlfriend is right there... the guilt and the pleasure of raw fucking make it impossible to stop pounding!