Smoking stepsister fucked by a stepbrother, his silence about her body

I went to my stepsister's room and it was surreal to watch her smoke and masturbate herself. I burst through the door telling her I wanted my car keys and I told Amber I wouldn't say anything about catching her smoking and playing with herself if she did something for me too, I told her she had to suck my cock. At first, she was trying to suck my cock like a seasoned pro and even deep-throated my cock. She lowered herself onto my cock and smoked another cigarette as she fucked me. I put her on her back and started to pound her juicy pussy. Finally, I had her on her back with her head just off the mattress and I throat fucked her. She took every inch of my cock milking it in her velvet throat until I came in her mouth. After showing me her prize she gulped down my whole load.