Gu Baichuan didn't let Dong Shanshan sleep alone.
Things like this, if left unclear, would surely leave a knot in her heart.
Though he had no experience in relationships, seeing Dong Shanshan like this—clearly unhappy—he couldn't bring himself to just let her sleep alone.
Moreover, things should be made clear when they're brought up.
After a night passes, who knows what she might overthink.
So, he spoke up: "I admit it. I used to like Su Nanxing, but that was a long time ago."
Gu Baichuan recounted his first impression of Su Nanxing, reminiscing about how, when he returned to work, she had already become Lu Beiyuan's fiancée.
Afterward, he tried to limit his interactions with Lu Beiyuan as much as possible.
During the first three years of Lu Beiyuan and Su Nanxing's marriage, the number of times he saw Su Nanxing could be counted on one hand.
Later, Lu Beiyuan and Su Nanxing divorced, and a lot happened in between.