Hong Kong singer-actress Karen Mok is in a different country from her husband most of the time. Back in 2011, we all went 'awwww' when she wed her childhood sweetheart Johannes Natterer in a happy-ending type of high school romance. But how do they hack the long distance, which has driven the most loving couples apart? In Singapore to promote her latest Mandarin album, Departures, the radiant star shares her tips to keeping a long distance relationship happy.