Milkii,
For Sunday morning, I find fluffly scrambled eggs with truffles plus Melba toast and smoked salmon canapes, all washed down with a mimosa a nice way to start the day with your significant other.
Oops, I realized now you are asking for a romatic evening.
Please consider my suggestion the menu for next morning if everything goes OK that evening.
I would casually bring up the subject of food and cooking even DC and find out what her favorite foods are not to give away what you are up to. Then go from what she tells you and surprise her. She will be quite impressed by how far you went to make her favorites.