My little stepsister offers me rough sex in exchange for taking her to the movies with her friends.

My stepsister needs to go out with her classmates to the mall because they are going to see a new movie, she asks me to take her in my stepfather's car. I am watching a super important fight of fighters so I refuse since it is very important, she begs me and tells me to fuck her in exchange for me taking her there, since she knows that her pussy is my weakness I fuck her hard and I took her to the movies.