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Allison Pearson's 'Love' Letter To Keith Partridge

Allison Pearson follows up her 2002 best-seller, I Don't Know How She Does It, with I Think I Love You, a novel about a teenage girl's obsession with teen star David Cassidy. The book wasn't hard for Pearson to write. When she was growing up, she was madly in love with Cassidy too.

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