I dont believe he did - I feel like they were both set up to make it look like that so she would divorce him.…
I think she's really their daughter because the title is " Unpredictable Family" I can be wrong but I still don't believe nothing happened between Eunsung 's parents when he's still married with his ex wife because some dramas although people caught them sleep together he still said " It's not like what you think" š