The song "One And Only" by UFO is a passionate and longing love letter to someone the singer deeply desires to be with. The lyrics express the desire to see the person's face, to wrap their arms around them, and feel their body race with excitement. The chemistry between them is compared to a pie being cooked by a chemist, indicating a strong and intense connection. The singer also describes feeling lonely and unable to bear the separation any longer. They have never experienced such intense loneliness before and emphasize that the situation is not yet over. The repetition of the phrase "it ain't over 'til it's over" reflects the determination to keep fighting for their love. In the second verse, the singer talks about dreaming about the person and how they slip into loose clothing or out of jeans. This can be interpreted as a metaphor for being comfortable and intimate with each other. The mention of a gunman from Laredo in their house with silent silver spurs might represent the potential danger and excitement surrounding this passionate love. Overall, "One And Only" is a passionate plea to be reunited with a loved one, expressing intense desire, loneliness, and dedication to fighting for their love.