Soot Sanaeha (2009)

Both are about the relationship of a spoiled well known actress with a man who endures her behaviour and slowly starts to have feelings for her.
Both are humorous.

Both have the same leading actor and actress.
In these dramas the female lead works as a celebrity.
In both the female and male lead didn't like each other at first and then start to develop feelings for each other. In both it's the male who realizes his feelings for her first.