The couple reportedly met during production on Darren Aronofsky's "Black Swan." Portman's performance in the suspense thriller, set in the competitive world of professional ballet, has earned her Golden Globe and Screen Actors Guild Award nominations; she's also being cited as a leading Oscar contender.
She next stars opposite Ashton Kutcher in the romantic comedy "No Strings Attached", which opens next month.
This will be Portman's first child.
– The Hollywood Reporter