Everyone at my job says "blinkwatt,your nuts","your so spontanoues" or "your crazy". I think it comes back to the fact that I dont wait for what I want. If I want to have fine dining,I mean very high end food I have no problem driving a hour away to eat there at that very moment. It all comes back to my mentality of getting what I want,and I dont stop till I have it.
A good idea you can do(depending on your age),is take her out of town when you two hang out. My friends and I do this all the time. If we want to go look at Ferraris,Porsches or Lambos we drive a hour away just to look at them for 30 minutes,then there is still the hour drive back. Then we cruise around the rich neighborhoods exploring unknown areas,just cruising,plain and simple.
You could find out what her favorite type of food is(Italian,Mexican etc.) and take her out to the best food spot for that type of food. Call around a nearby city/town(any place it doesnt matter) and ask them "Hey I was wondering whats the best Mexican food place around?". It will be funny to hear how people react to you asking that question even though it may be a laundry mat you called. The fact that you are going to an unknown area together is mysterious,she will like it. After dinner you could cruise the town and see what it has to offer,kinda like site seeing.
Just remember never short change yourself. Dont say "oh well its too far",its just a drive,crank the radio and cruise. Dont say "I dont know that area",who cares,expand your knowledge,meet new people. This is what will help you keep stuff fresh. By the way my grandfather(R.I.P.) did this often,he would go to Napa from Sacramento(1.5hour drive) with his girlfriend for lunch,or to buy a hobby train.