If he's in pain due to the formal rejection

"Elder Sister, I don't understand. You should be in immense pain. I saw some of the reports on formal rejection between the true mates. It was extremely painful for both of them. The first few months were torturous. When the worst was over, they were " 

Huang Qiuyan rubs her chest. The dull ache in her soul must be due to the formal rejection. But it's not overwhelmingly painful. She recalls how she suddenly felt a sharp pain after she pushed him away. It lasted barely for a second, but it felt like her soul was breaking apart. Fu Sheng ran away right at that moment. Did he feel the pain too? Is that why he ran away? Is it related to close proximity? Now, they will repel each other?