Cheater. With the boyfriend of the best girlfriend

I'm sitting comfortably on the sofa when suddenly the boyfriend of my flatmate and best girlfriend is standing in front of me. She had obviously given him a key and now he came to pick up Jenny. But since she was out shopping, I took my chance to nibble him. I had had my eye on him for so long. And since I had already fucked her father recently, it didn't seem to matter now either.