Ji Sung in Defendant and Joon Gi in Two Weeks are both fugitives on the run, and they both are dads with a little girl. Both are amazing stories with a similar feel of dark mystery, action, and suspense.

Its similar in the sense girl goes back in time and has useful knowledge from the future.
However in faith which is a full length drama the guy is a general and girl is a doc. Its more mature vibe and has some supernatural stuff.
In Splash Splash which is 2 ep. the guy is the king, and the girl is in high school, overall the drama is really cute.

They both have the psychology aspect but I found it's Okay, That's Love to be much deeper plot while Madam Antoine was lighter and more comedy. Both females leads are bold but while in Madam Antoine she was a fortune teller and he was the psychologist, in it's Okay, That's Love she was the psychologist and he was a writer. Both stories the main characters had love issues and the guys had traumas