On Thursday, the 34-year-old Shame actor was spotted taking a romantic stroll through the streets of New York City with his co-star Nicole Beharie, 27.
Fassbender, wearing a long grey coat, was photographed walking with his hand over Beharie's shoulder, as the two shared laughs and braved New York's chilly weather.
The new couple is a long way from the characters they played in Steve McQueen's Shame. Beharie's portrayal as a coworker of Fassbender's sex-driven workhorse Brandon Sullivan is the only character he doesn't sleep with in the film. (After one dinner date and flirtation at work, the two head to New York's famous Standard Hotel -- but Brandon fails to deliver).
Beharie, a native of West Palm Beach, FL, has appeared on episodes of The Good Wife, Law and Order: SVU and the films My Last Day Without You, The Express and American Violet.
Shame earned Fassbender a variety of awards and nominations, including a Golden Globe nod for Best Actor. He was also honored by the National Board of Review with a Spotlight Award, thanks to Fassbender's four projects in 2011, which included Jane Eyre, opposite Mia Wasikowska, X-Men: First Class and A Dangerous Method, opposite Viggo Mortensen and Keira Knightley.
But let's get back to his personal leading lady friends.
Fassbender was previously linked to Zoe Kravitz (Lenny's daughter), who is currently dating Gossip Girl star Penn Badgley. Fassbender and Kravitz, 23, split in September, after meeting on the set of X-men: First Class in 2010.
In January, Fassbender was also seen canoodling with former flame Leasi Andrews. According to the New York Daily News, the pair packed on the PDA at the Writer's Room in Los Angeles, before grabbing a cab to a nearby hotel.
Professionally, Fassbender is gearing up for another big movie year. Currently starring in Haywire (directed by Steven Soderbergh), Fassbender's next scheduled release is Ridley Scott's sci-fi picture Prometheus. The German-Irish actor also has a separate project (The Counserlor) lined up with Scott, a third, unnamed, film with Shame director Steve McQueen and a Max Perkins biopic (Genius) opposite Colin Firth.
On Thursday, it was also announced the Fassbender had been added to the cast of The Mountain Between Us, a romantic drama directed by Gerardo Naranjo (Miss Bala, Malachance), based on the novel by Charles Martin.
What do you think of new couple Michael Fassbender and his Shame co-star Nicole Beharie? Scroll down for the film's trailer (Beharie can be briefly spotted at 0:34 and 1:22)