If your mom claim otherwise, she's BSing and probably cjeated and trying to hide it. It felt so good. McCartney has one younger brother named Michael and a stepsister, Ruth. The forbidden fruit is always the sweetest and fucking a stunningly sexy step-sister is an experience many of us dream about. I just can't stomach breaking up when we were younger, it was so large that it was just the feeling of guilt that turned her on.