#5.
Chinese Spy Declared Too Sexy to Arrest
In 1982, FBI Special Agent J.J. Smith recruited a young Chinese woman named Katrina Leung in order to gain information on one of her friends, a PRC activist. Smith was so impressed by Leung that he decided to make her a full-time FBI asset under the impossibly sexy codename "Parlor Maid."
In 1983, they started boning.
Now this would be some awesome spy-on-spy action, if it wasn't for two things: First, both Leung and Smith were married to different people and second, Leung was a double agent; almost immediately after she was acquired by Smith, she turned right around and started feeding classified and unauthorized information back to her Chinese contacts (which she had a lot of, since her supposed job for the FBI was to cultivate Chinese contacts). It took nine years before she was discovered when another agent named Bill Cleveland found a recording of Leung spilling her guts to some Chinese officials.
Instead of going to his bosses, Cleveland confronted Smith, who confirmed that it was Leung's voice and that he would be taking action, whereupon he promptly did nothing. Instead, he sent 19 reports to headquarters, all saying, "No, she's cool." If you're wondering why Cleveland never bothered coming forward with this critically important piece of espionage intel, it's because he was busy coming in other directions. That is, he was also boning agent Leung.
More:
http://www.cracked.com/article_19219_the-7-craziest-things-ever-done-to-get-laid.html?utm_source=facebook&utm_medium=fanpage&utm_campaign=new+article&wa_ibsrc=fanpageSee also:
Retired FBI Agent Sentenced to Probation, Fined in Spy Case
http://www.democraticunderground.com/discuss/duboard.php?az=view_all&address=102x1637507