Shen Yao's demeanor changed abruptly.
He was Chen Xiuxiu's boyfriend and also her senior in school, who knew her even before she started her weight loss journey, planning to visit Chen Duxiu with Chen Xiuxiu during the National Day holidays this year.
Of course, that was only his plan, Chen Xiuxiu didn't yet know about it.
As for why he only started dating Chen Xiuxiu after she lost weight...
There's a saying that goes, "Begin with looks, fall for talent, stay for character."
You have to start with looks; without them, talent and character mean nothing. He was all about the appearance, and the slimmed-down Chen Xiuxiu was pretty.
If everything went smoothly, they would get engaged after Chen Xiuxiu graduated from college, and after a few years of working and establishing a financial foundation, they'd get married and then have one or two adorable children. As the kids grew up, he could look forward to losing his hair while smoothly entering a mid-life crisis.