If you are doomed, there is no escape.
The absolute opposition between Gryffindor and Slytherin, the Order of the Phoenix and the Death Eaters, the "Mudbloods" and the pure-bloods made them unexpectedly fall in love with each other. Perhaps for them, falling in love with each other is a disaster.
Hermione Granger and Draco Malfoy are each other's doom.
Intention: Derivative