What is a short summary of the story, Going Ashore, from the collection, Unaccustomed Earth?

In “Going Ashore,” Hema and Kaushik meet in Rome in the late autumn and early winter of 2004. Hema is an academic engaged to be married, and Kaushik is preparing to leave for Hong Kong for a new assignment. They become lovers but do not commit to each other. On a layover in Thailand for a week, Kaushik goes swimming, only to be killed by the Indian Ocean tsunami on December 26.