Former Late Show with David Letterman staffer Stephanie Birkitt said in her private diary that she continued having sex with Dave even after moving in with her CBS-producer boyfriend, Robert Halderman, who later allegedly tried to extort him.
According to the New York Post, Letterman and Birkitt enjoyed romantic hikes last fall at his ranch in Montana, where he married Regina Lasko in March.
All the while, Birkitt's beau Halderman, a CBS News producer, was home in Norwalk, Conn. Birkitt told him she and Dave had "a platonic relationship."
"I'm his best friend," Stephanie Birkitt told a worried Robert "Joe" Halderman.
Stephanie Birkitt's rumored cheating on Robert Halderman, her boyfriend of several years, may have driven him to blackmail David Letterman, according to reports.
Apparently, he was such a good friend that at least once a week, he drove Birkitt to the house she lived in with Halderman since he divorced his wife in 2004.
According to the diary, Birkitt, a recent graduate of Benjamin Cardozo Law School in New York, was offered a job by Letterman to be his personal attorney.
Birkitt later tried to use the generous offer to persuade Halderman to have children, saying she'd make good money and he could stay home with the kids.
Halderman reportedly went through the roof when he read Birkitt's diary in December, after she moved out (and somehow inexplicably left her private diary).
It was then he learned she was still carrying on an affair with Letterman.
These details emerged as Letterman returned to the Late Show for the first time since Thursday, when he revealed he'd had sexual affairs with female staffers and became targeted in a $2 million extortion plot by Halderman as a result.
Last night, Letterman attempted to blend humor with earnest apologies as he made many jokes at his own expense, then turned serious as he addressed the affairs, apologizing to wife Regina and his staff for the pain he's caused.