Hey guys!

Some time ago I saw this asian movie about two actors who absolutely hated each other but was forced to move in together and play a couple to promote the movie they made together. A lot of the movie was about them trying to annoy each other but in the end they ended up together. I mean to recall he followed her bus/car on a motorbike.

Does anyone know the title of this movie because I can't find it anywhere and I would love to see it again??