Opposites attract... then drive each other crazy.
There are some areas where I believe similarities are not negotiable.
Brother beware when you are going through a catalogue of living room furniture and happen upon a picture of a home and she says 'I don't like this picture... the house doesn't look lived in' There is a possibility that she doesn't mind having varied items lying around the house round the clock. If you are a neatness freak, decide on what you can/cannot tolerate.