Fucked by the stepbrother. Is this allowed?

I was in the club recently. Totally underfucked and looking for a cock. When I accidentally passed the locker room, I could not believe my eyes. There was actually my stepbrother. I must admit that I have always found him very horny. Now I finally wanted to know ... Does he really fuck as well as his girlfriends say? So I throw myself ran and have a short time later finally his cock in the mouth. To the stop he pushes me in the beating. Now the part has to be finally in my wet hole. Neatly fucked, but then I finally want the taste of hot sperm. I waited a long time for that. But now I have a bad conscience. Is it allowed to fuck with his stepbrother? It's better not to tell our parents.