Be a Slut With Me & Keep Your Secrete...

My 18 year old step-daughter is such a slut, but I must confess....I have masturbated to the thought of her being a little slut with me many times. I have never acted on my desires as I know this is wrong, and her mother would be sure to divorce me if she ever knew. One weekend my wife was out of town, and I caught my step-daughter the next morning that she snuck out of the house to go party with boys. I went through her phone and found a bunch of text messages and naked selfies of her, while she was partying with boys and being a slut. When I went to confront her, she was still very tired from the night before and half naked on her bed. I know it was wrong but after seeing those half naked pics, I couldn't help but to try to sneak a peek at her for later masturbation material. I confronted her about sneaking out, but you could tell that she wasn't all that concerned about me telling her mother. She admitted that she was a big slut, and that she let multiple other boys penetrate her open twat last night. She knew what I wanted, and knew she could make a deal with me... She told me that she would be a little slut with me, so that I could penetrate her just like the boys did last night, in exchange for me not telling mom. Deep down she really enjoyed spreading her legs for step-daddy, and showing me her spread slit....and I enjoyed filling up her holes with nice long slow strokes. Then watch how she strokes all my thick man juice out of my throbbing cock, and how cute her perky 18 year old tits look as she twists her hand slowly up and down step-daddy's cock till I stopped cumming.