My friend’s sister called me on Skype to show me her body

I’ve known my friend for over 8 years. We are currently 17 years old, and when I met him, he was only 9. Since he was 5 years older than me and his body was already developed when I started to enjoy the female figure, I’d often go to his house to play and see his sister wandering around the house in her pajamas. This was a real concentration problem for me. Recently, I confessed all my desires to him and the bitch asked me to call her on Skype so we could have a secret sexual encounter. She starts being provocative through the chat, and when I turn the camera directly to my erect penis, the bitch quickly undresses to start stimulating her wet vagina like a complete sex freak. It really turns me on to see her beautiful breasts and how her fingers stimulate her moist vagina.