The family found out

Oh, that was a shock for them! I mean shouldn't Hyun Tae end things with this girl and get it over with? He's only hurting Mong Hyun and his mother.

I guess Hyun Jun has a little hunch about what his mother did to Hyun Soo's? He's starting to become a good character more and more. It's his witch mother who's making things harder for him.

And manager Yoon, instead of telling Mong Hee that she shouldn't be with Hyun Soo anymore; you should tell her that Yoona is her twin sister already!