Today my girlfriend's parents were not at home so she invited me to her place. I got to meet her younger sister Karen again. Karen is extremely beautiful and cute, especially with her stunningly long and beautiful legs. She accidentally revealed her underwear in front of me, and I couldn't take my eyes off and she caught me. I thought she would be mad at me, but no, she even wanted to have sex with me instead of her sister. And she was even more daring when she wanted to have sex right next to my girlfriend!!!