SW-650 — My Friend's Girlfriend Is A Slutty Woman Who Shows Off Her Sexy Underwear To Me And Tempts Me. She Secretly Inserts My Erect Penis Next To Her Boyfriend And Gets Really Excited, What Should I Do?!!

My friend and his girlfriend showed me how to have sex in front of me, who has no experience in love, and it got me horny. She was not satisfied with the sex she had with her boyfriend, so she was curious about my erect penis and seduced me when he looked away or when he was asleep. I got to experience the thrill of having sex with my slutty girlfriend, who was excited by the situation of inserting her friend's penis into her even though her boyfriend was right next to her.