I jus love this song. It should be like the official song for every Final Fantasy couple.
Cleris - 1000 Words
http://www.youtube.com/watch?v=QyVlRdyF3u0
Squinoa - 1000 Words
http://www.youtube.com/watch?v=WJRDO7vLnps
Cleris - Girlfriend
The song doesn't fit the couple really, but it is extremely well done.
http://www.youtube.com/watch?v=1KXqWGl0j80