I mistook a woman with a similar backside to my girlfriend and inserted myself into her before even greeting her, making her aroused! The sister who got turned on by the sudden insertion and I had sex with internal ejaculation. She gave me forced cunnilingus & fellatio near my girlfriend, we had sex with internal ejaculation next to my sleeping girlfriend, we had internal ejaculation & paizuri in the bath, reverse immediate insertion with high-speed piston internal ejaculation... and so on. The sister who kept tempting me to thrust my hips and reach a massive orgasm near my girlfriend! I couldn't hold back and ejaculated inside her because it felt better than with my girlfriend!
