The song "That Girl Is Mine" by Sammy Johnson is a tribute to a special woman in the artist's life. The lyrics describe how this girl is the highlight of his day, bringing joy and happiness every time she is around. He expresses his gratitude for having her in his life and acknowledges that there is no one else who makes him feel the same way. The song emphasizes the deep connection and intimacy between the two individuals. They choose to keep their love life private and believe in each other's dreams and aspirations. The girl is supportive and understanding, always by his side. The artist feels incredibly fortunate to have found someone like her. Sammy Johnson acknowledges the girl's physical beauty, comparing her face to that of a model and her heart to that of an angel. He appreciates her intelligence and describes her mind as divine. He also highlights her attractive physique, acknowledging that others may be attracted to her but firmly asserts that she belongs to him. Overall, "That Girl Is Mine" is a love song expressing admiration, appreciation, and possessiveness towards a special woman in Sammy Johnson's life. It conveys the artist's deep affection and gratitude for having found someone who brings so much joy and love into his life.