Any drama where the ML and FL are really foolish and lovely together while with anyone else they sort of loose their true selves and is more like their polite/work personalities. And perhaps the SML and/or SFL are like we're perfect together not realizing it's just one of their(ML/FL) personas and not their true selves. 

Cunning Single Lady. FL and ML are ex-spouses, so they know each other very well. The begining is confusing and many viewers dropp this drama because they hate FL, but when you know the whole story, her actions are understable. In fact the plot is very beautiful.

Kimi wa Petto .In front of her boyfriend FL pretends to be someone else and it's very tiring for her. So she gets... a handsome pet (I don't know, how to describe him) to relieve her stress.