Do you know this music video?

The scene is in a subway I think. And then there was a guy. He saw an ad, I think, on a wall which was a doodle. Then he drew something which I think is water splashing to the doodle. At the different time, a girl saw the drawing and she too started to draw something which I think an umbrella. Throughout the music video, the guy and the girl were drawing on the wall. Any idea guys? Please answer. TQ!