crazy horny obsessive step-sister drains you

My best friend told me you fuckd her last night during OUR sleepover! Did you really think you were going to get away with fucking someone else and I wouldn't find out?? She is my best friend... she tells me everything! I can't believe you would do that to me!! I feel like you cheated on me... ever since we started fucking i thought it was only me and you. Now you're going to take me right here and now and give me everything you got.