Marriage Before Love: Let Me Go

*It all began as a business marriage between Yuan Shaoqi and Lu Xu.  
They said there was no love between them. 
But was that true, or was it just because they didn't realize their true feelings? 
He willingly agreed to be used in her company's advertisement. To make it more realistic and attractive to consumers, they showed off their affection visibly in public.  
But during this period, the unexpected return of his old love disturbed their relationship and caused a lot of misunderstanding between them.  
She wanted a divorce which he strongly opposed. She felt that she had no position in his heart. But if this was true, then why wouldn't he let her go?