Can anyone recommend me a drama where the FL is married and has a child, but the child is not her husbands. That is, she had an affair. This should be a secret people don't know. Like  the kdrama A Place In The Sun. 

 Emi:
a drama where the FL is married and has a child, but the child is not her husbands. That is, she had an affair. This should be a secret people don't know.

Empress Ki