Where are you planning to stay? When is your trip? How long are you planning to stay? What age range are you guys in?
Without knowing those things, it's going to be hard to give you much help. A few basics.....
Never underestimate how nice it is just to be there with someone that you love. To me half the fun of the thrill rides is hearing Corey laugh/scream her way through them. Walking hand in hand, stealing a quick kiss in an out of the way spot, sharing a Mickey Bar....these are the things that make a Disney vacation extra memorable.
Sometimes it's fun to go to DTD to see a movie. You can buy tickets in advance.
http://www.moviewatcher.com/theatres/theatre_information.jsp?unit=572
We have enjoyed a carriage ride over at FW before. They are bookable 60 days in advance.
http://pscalculator.net/winpop/iw_fwhdcr.html
Depending on what you are into, there are a variety of entertainment options open to you. The waterparks are fun, but TL offers Surfing Lessons. There are lots of golfing options. If you are into drowning a few worms, there are fishing excusions. If fireworks are your thing, then you might want to do a fireworks cruise. Oh, and don't forget the spas!
http://www.relaxedyet.com/ Then of course, there are lots of tours to be taken. Corey loved the Segway tour at FW.
Of course, I am sure that you are looking into a nice TS meal or two for you to enjoy together. One hidden gem is lunch at LTT. We love it there.
I look forward to hearing your plans.
