it must have been the mistletoe the lazy fire the falling snow the magic in the frosty air that feeling everywhere it must have been the pretty lights that glistened in the silent night it may be just the stars so bright that shined above you our first christmas more than we d be dreaming of ah saint nicholas had his fingers crossed that we would fall in love it could have been the holiday the midnight ride upon sleigh the countryside all dressed in white the crazy snowball fight it could have been the steeplebell that wrapped us up in its spell it only took one kiss to know it must have been the mistletoe our first christmas more than we d be dreaming of ah st nicholas must have know that kiss would lead to all of this it must have been the mistletoe the lazy fire the falling snow the magic in the frosty air that made me love you on christmas eve our wish came true that i would fall in love with you it only took one kiss to know it must have been the mistletoe it must have been the mistletoe it must have been the mistletoe 