Katy Perry and John Mayer Explore Their Relationship With 'Who You Love'

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Katy Perry and John Mayer Explore Their Relationship With 'Who You Love'

Katy Perry and John Mayer Explore Their Relationship With 'Who You Love'
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Katy Perry and John Mayer Explore Their Relationship With 'Who You Love'

by ABC News Videos 4:52 mins

The pop stars reveal the best and worst parts of writing their new song together.

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