Gu Xiaonuan has little memory of what happened after she got together with Si Yuchen, but there really isn't much to reminisce about, is there?
If it was really so blissful, then when Gu Xiaonuan first woke up with memory loss and saw Si Yuchen, she wouldn't have thought about divorcing him.
If Si Yuchen had even a little bit of affection for Gu Xiaonuan, things wouldn't be like this now.
Si Yuchen didn't have any love for Gu Xiaonuan at all. They must have married due to their own motives.
Perhaps after they got married, their interests changed too, and to Si Yuchen, these ideas finally gained different meanings.
No matter how they think about it, it's impossible for Si Yuchen and Gu Xiaonuan to fall in love, so Gu Xiaonuan can rule this out.
Since Si Yuchen put it this way, then there's no need to be polite with him anymore.
If he wants Gu Xiaonuan to agree to his demands, it's up to Gu Xiaonuan to decide whether she will or not.