I was invited to my girlfriend's house to have a drink with her and her sister. While she was drunk, her sister approached me and suddenly seduced me! "I broke up with my boyfriend and I'm frustrated... Let me touch your dick?" I care about my girlfriend, but I can't resist being seduced by such an older sister! And unlike my girlfriend who only lets me have sex with her using a condom, her older sister is OK with raw sex! And she's OK with cumming inside me! Even though my girlfriend is right next to me, the raw sensation feels so good that I can't stop thrusting!