Father wants to see his children while they fuck

My father has married a woman who has a son very sexy. From the very beginning I did not care that it was my half-brother, I wanted to scoparmelo intensely. Then I convinced him to fuck and, from the first time, I never stop. The agonized every day, even when our parents were home. So it is that my father has found that we have sex in the room. My father was furious, I asked not to say anything to my stepmother. Then my father asked me what I wanted to the cock of my step brother, I didn’t know what to say. But before you answer anything, my father has asked us to fuck in front of him. It was so strange moan in front of my father, but to be honest, I was excited that we saw.