Episode 9's Doyoung unease inside the closet

I don't quite get why Doyoung felt unease inside the closet, could it be because all clothes he has are from Jaejoon's store further proving how "close" Yeonjin and Jaejoon are?

 curvedtree:

I don't quite get why Doyoung felt unease inside the closet, could it be because all clothes he has are from Jaejoon's store further proving how "close" Yeonjin and Jaejoon are?

It tells him how many time his wife has cheated on him.