The brother looks angry, I think sahan might blame himself for not going and also the brother might blame sahan for his brothers death and this might really push sahan to not be with heegeon because of the guilt
This kind of stalking might actually happening in some idols or actors we just don't know it, we might see some articles about obsessive fan we don't know if there is more that they can do
Wow, he just puts them together then hold his ass and they act like nothings happening they are so comfortable with each other