Petite, fair-skinned, busty girlfriend is cuckolded and falls into pleasure as a massive senior's pressure riding press fuck

I recently got my first girlfriend. She is cute, cheerful and boasts an angel-like personality. I have no experience in love, so I don't know how to hold hands and get panicked. At that moment, he meets a famous delinquent senior in his hometown. The senior rode at three times the weight of her, and made her cum many times more than her, unable to resist. What's more, they invited friends and had sex with multiple people. She was captivated by the forced and violent sex of her senior, and she was cheated on me before I had sex...