Am I a Substitute?

"I'm sorry, I didn't mean to pry into your past. I just found out by accident. When I first found out about this news, I was very shocked and sad. I even thought about letting you go, afraid that I would be hurt again. I was also afraid that I would not be able to stand up this time, but I was even more afraid that I would not be able to solve the problem. I didn't want to run either," Meng Nianyao said seriously. "Gu Wencheng, I want to know if I'm a substitute. Please answer my question seriously. I don't like to be deceived."