Answer
Shi Pei Pu was involved in a long-term affair with Bernard Boursicot, a French diplomat. They met in 1964 and began a sexual relationship in 1965. Boursicot was unaware that Shi Pei Pu was a man and believed that he was a woman. Shi Pei Pu used this deception to get Boursicot to steal documents from the French Embassy in Beijing.