If you are on the dining plan and wanting to use credits, your best bet is to walk from the World Showcase over to the Yachtsman steakhouse at the Yacht Club. That's the closest you will come to finding romantic in a 2 TS place in that area.
I think both Bistro and Il Mulino are romantic but they are not on the dining plan.
The two you mentioned are 1 TS credit meals.