In 2018, the Snatch star, 55, was briefly linked to Oxman, a brainy beauty who works as a professor at the Massachusetts Institute of Technology Media Lab.
But Oxman has just walked down the aisle with hedge fund manager Bill Ackman and they are expecting their first child together.
The news broke on Sunday, January 20, 2019, when Oxman, 42, and Ackman, 52, announced they had wed in the Vows section of The New York Times.
They had tied the knot the day earlier at Central Synagogue in New York City, with Rabbi Angela Buchdahl performing the ceremony. Their baby is due in the spring.
Ackman told the Times, "Having children is something Neri has always wanted. So this is quite an amazing gift for both of us."
They reportedly became close early last year when Oxman helped Pitt with an architecture project he was working on.
According to a source, the Hollywood hunk thought she was the "sexiest woman" he'd "ever met" and was going back to school to impress the intellectual teacher.
An insider told Radar that he was getting ready to introduce Oxman to his six kids by Jolie: Maddox, 17, Pax, 15, Zahara, 14, Shiloh, 12, and twins Knox and Vivienne, 10.
But Pitt's hopes were dashed after hedge fund billionaire Ackman swept Oxman off her feet.
A source told Radar, however, that Pitt refused to give up and had been "calling her nonstop" after she was seeing Ackman.
Oxman denied that her relationship with Pitt was ever romantic.
Both Oxman and Ackman have been married before. She was previously married to classical music composer Osvaldo Golijov from 2011 to 2015, while the investor was wed to landscape architect Karen Herskovitz from 1994 to 2017. Ackman and Herskovitz raise three children.
"Bill inspires me to assume a bigger identity, to grow while being grounded, but not without asking me the hard questions," Oxman gushed about her new husband to the Times after their wedding.
"We both appreciate the expansiveness of life, love and living associated with cultivating, building, sharing and inspiring a creative life, one that transcends the often-prescribed categories of family and work and unites them into synergy."
But all isn't lost for Pitt, who has been in a long and bitter divorce battle with Jolie.
He's reportedly in a new romance with Charlize Theron after they were introduced by Sean Penn.
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