It's easier to write about heartbreak after you've had your heart broken. You have more material to draw from, you can extrapolate from your own experiences and make reasonable assumptions about how your characters would feel and act.
Patrick RothfussI take back everything I ever said about that boy being clever." He turned around to face the bar while leveling an accusatory finger at the closed door. "That," he said firmly to the room in general, "is what comes of working with iron every day.
Patrick RothfussAuri took it, and peered inside the small leather sack. โWhy this is lovely, Kvothe. What lives in the salt?โ Trace minerals, I thought. Chromium, bassal, malium, iodine . . . everything your body needs but probably canโt get from apples and bread and whatever you manage to scrounge up when I canโt find you. โThe dreams of fish,โ I said. โAnd sailorโs songs.
Patrick Rothfuss