Sharing your GF with your best friend

Your girlfriend tells you her biggest kink after a night out, she wants her boyfriend to share her with another guy! You have sex while talking about her fantasy until you cream pie her. The next day you tell her you have arranged for your best friend to come round, you want him to fuck her in front of you. Your best friend fucks your girlfriend in front of you before pulling out and cumming all over her pussy, you then fuck her and give her a nice big creampie!