Get ready to rethink everything you thought you knew about Leonardo DiCaprio's iconic character Jack Dawson, courtesy of one wild new fan theory about "Titanic." And it also explains why Jack just ...

A new theory explores an interesting idea about who Jack Dawson was — and wasn't. Hot List: Midi Dresses, Crocs Clogs, Travel Backpacks, More July Must-Haves. IE 11 is not supported.