Congratulations! What a great place for a honeymoon. There's such a large selection of resorts to choose from, and most of them have some romantic features. Your question is kind of too big to answer. Since (unfortunately) money is often a big consideration for most of us, it would help if you narrowed down your choice to the value, moderate, or deluxe category and asked again about resorts in that category. You can go to the WDW site and try to reserve some different types of rooms to get an idea of prices. Rates with
AAA discounts might be available now, but there's always the chance there will be other discounts available next year.
Swan and Dolphin are in a great location and have some fantastic rates if you're a nurse, teacher, or gov't employee. Some people think the S&D don't have as much Disney atmosphere, but they're deluxe resorts and are in an excellent location. I think the atmosphere is just wonderful when I can book a deluxe resort for under $150.
This site has pictures of the various resorts, so you can get an idea of the decor. If you have some resorts you're interested in, post another question about those. It's easier for people to respond to more specific questions.
Resorts that I think are particularly romantic are: Wilderness Lodge, Poly, Yacht and Beach, Animal Kingdom Lodge, Boardwalk, Grand Floridian, Port Orleans French Quarter and Riverside (especially the mansions), Caribbean Beach. Most of the resorts seem romantic at night, when they're lit up and you can stroll the grounds.
Good luck choosing!