Fucking My Best Friend's Girlfriend in the Kitchen While He's in the Next Room

My best friend Fede introduced me to her new girlfriend last week and I was really shocked by her beautiful face and sexy body... it's getting really hard for me to lie about not liking her because I really really do... and I can't hide it anymore! She provokes me I know, and I want to be a good friend but she keeps acting like a slut in front of me in the kitchen while my friend is playing videogames in the other room... and I just have to fuck her even if this means the end of a long and valuable friendship... I can only think of her ass and how the taste of her pussy could be! It's driving me crazy!