Context: "You're Going to Lose That Girl" is a song by the Beatles from the album and film Help!, written by John Lennon and Paul McCartney. Capitol Records originally titled the song "You're Gonna Lose That Girl" in the United States.\n\nQuestion: who wrote you're going to lose that girl?
Let’s work this out in a step by step way to be sure we have the right answer.
John Lennon and Paul McCartney
To answer this question, we should know that: "You're Going to Lose That Girl" is a song by the Beatles from the album and film Help!, written by John Lennon and Paul McCartney.

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The final answer: John Lennon and Paul McCartney