YORBA LINDA (CBS) — The Richard Nixon Presidential Library is unveiling long-lost love letters that reveal the 37th president’s private side.

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The letters were written while the intensely private Nixon and his future wife, Pat, were still dating.

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Nixon refers to Pat as “dearest heart” and “Irish gypsy,” saying he daydreams about the future.

“Every day and every night I want to see you and be with you,” he writes.

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The love letters will be unveiled Friday.