My girlfriend discovered my secret camera and enjoys it while fucking my fat step brother

So this bich knows about my dirty hobby of putting cameras in my step brother's room but I have to say it's the only thing why I respect her because she didn't tell him about it. But she doesn't listen to me at all and just fucking as she wants because now she has my secret and she can manipulate me. I even don't want to think about it if she tells me about cameras in my step brother's room. It would be the second time already that my step brother had caught me up and I'm sure this time he doesn't forgive me anymore but will fuck my ass...