I agree with cd&kids about Artist's Point. I also would suggest Jiko, for wonderful food, service and low-key atmosphere. Some of the other great WDW restaurants (CG, Flying Fish) are loud, which is not so romantic IMHO. bluezoo might be another option for you. I have not eaten here, but the reviews have been good and I have seen the interior and the "blue" decor everywhere seems romantic to me. Palio, Yachtsman Steakhouse and Shula's also hold romantic possibilities.