I have a friend who always comes here at home, just to my stepmother

I have a friend who has always been a really tremendous rascal and managed to make my stepmother fall completely in love with him to the point that she doesn't care at all to know that she is cheating on my father with my best friend almost daily and all this inside our house. Most of the time I'm the one who opens the doors of the house when he arrives and I welcome him already knowing that he's going to eat my naughty stepmother in her room until she gets all smeared with cum.