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“GIRLS” star Lena Dunham was stunned to discover that her boyfriend Jack Antonoff used to date sultry Scarlett Johansson – and now she’s grilling the tight-lipped rocker about what ELSE he hasn’t told her, say insiders.
Lena – who plays Hannah Horvath on the hit HBO show she created – has dated the guitarist with the pop band fun. for nearly two years. But, incredibly, she had no idea he and Scarlett were high school sweethearts until she stumbled across a picture of them on the website Old Loves.
“My mind is going to explode,” said Lena. “She’s beautiful, he’s beautiful, but it was just so surreal to be looking through this blog…and then there’s my boyfriend.”
Jack and “Avengers” stunner Scarlett, both 29, dated from 2001 to 2002 when they were classmates at New York City’s prestigious Professional Children’s School.
When Lena, 27, learned about the old matchup, a source says she began interrogating Jack like a detective.
“What else have you been keeping from me?” she demanded to know, according to her pal.
“Jack is a bit of an oddball and he thought the fact that he dated Scarlett was something his girlfriend wouldn’t want to know,” explained the pal. “He didn’t want to make her think she had to measure up to such a bombshell.
“Unlike Jack, Lena is an open book. She talks on and on about the lousy boyfriends she’s had in the past, and she can’t believe Jack’s never said a word about dating one of the world’s most famous women.
“Jack’s been on the road touring for more than 10 years, and now Lena is insisting he tell her about every hook-up or wild adventure he’s had!”
To make matters even more difficult, Jack is also in hot water with Scarlett, who’s engaged to French journalist Romain Dauriac after a failed marriage to screen hunk Ryan Reynolds.
When the beauty learned that Jack had been hiding their old relationship, an insider says she called and demanded to know: “What, are you ashamed of me?”
Jack’s head is spinning, said the source. “He can’t win for losing. He thought he was being a gentleman by keeping his lips sealed, but now he’s catching hell from both sides!”