Eight Centimeters from Love by Feng Qihang

She, Lin Xuanhang. It was the mysterious Nangong Princess who he had promised to marry in the next life at Shuangqi Middle School. She betrayed her again and again in her companionship, and even if he forgave her, she would never forget to put him in dire straits again. After being hurt and tortured again and again in the company, she was finally afraid of her increasingly warm heart. He wanted to let go and leave, but he didn't want to let her go.