Figuring out Movie title-Help?

The plot commences with the actress who works for several odd jobs and finds a "good" job as a housekeeper for a famous actor. Later on, she finds out this actor had a baby back in his days and tries to avoid the tabloids of discovering his child. In the end, she falls in love with the actor.

Sounds like Oh My Lady with Choi Siwon.

Thank you :) It was found Oh! My Lady.