Gilbert O'Sullivan's song "What Is It About My Girl" is an ode to his significant other and explores the reasons why he loves her so much. Through the lyrics, O'Sullivan highlights various aspects of their relationship that bring him happiness and make her special. The song begins with acknowledging the challenges they may face, such as the cold weather and the tedious process of getting a passport, but suggests that these obstacles don't matter when it comes to the love they share. O'Sullivan then ponders what it is specifically about his girl that brings him joy and makes her unique. He reflects on the nights they spend together, cuddled up in each other's arms, and mentions her clothing choices, implying that her natural beauty shines through regardless of what she wears. He raises the question of whether their love is written in the stars, suggesting a deep connection that feels destined to be. O'Sullivan also plays with wordplay, stating that "all is ain't," meaning that even if things may not be perfect, their love still prevails. The chorus repeats the question, emphasizing his wonder at what it is about his girl that brings him so much happiness. He describes her as sweet and neat, appreciating her personality traits that contribute to their relationship's joy. O'Sullivan then highlights his girl's cooking skills, emphasizing her ability to create delicious meals at home. He suggests that while dining out is enjoyable, nothing compares to the meals she prepares. Her culinary talents further contribute to her enchanting nature. The song concludes with a reiterated chorus, inviting others to take a closer look at his girl if they want to understand what makes her so special. O'Sullivan promises that anyone who gets to know her will be in for a treat. In summary, "What Is It About My Girl" is a heartfelt tribute to O'Sullivan's significant other, celebrating the qualities and experiences that make their relationship so fulfilling and their love so strong.