Xu Chang'an has always been passive by nature, rarely taking the initiative and not particularly skilled at sweet-talking.
However, in their marriage, sweet words are never lacking. If you think about it, you'll find that they're either uttered by Miss Yun, who knows not what embarrassment is, or coaxed out of him by Miss Yun.
Thus, the rare sweet word from him changes meaning in Miss Yun's ears.
"Don't want to be alone?"
Xu Chang'an: "..."
A bit helpless.
Sure enough, he often fails to keep up with Miss Yun's train of thought, and now he's gotten used to it.
He's not good at sweet-talking, but at the beginning of their relationship, he was the one who took the initiative.
To Xu Chang'an, he and Miss Yun are like an old married couple, not the older wife and younger husband others seem to perceive.
Yun Qian is his family, or even more important than family, so when Yun Qian wants other women to replace her and give him something...
Tsk.