The 22-year-old actress was seen taking a stroll with Adamowicz in New York.
The actress wore a floral printed frock teamed with opaque tights, flat pumps and a black blazer, while her boyfriend opted for a more casual look with black jeans, striped T-shirt and black jacket, reported Daily Mail online.
The actress announced her return to Brown University where she had dropped out in 2010 to complete the final installment of the "Harry Potter" franchise.
Watson is currently busy shooting for her upcoming film "Noah" where she plays Ila, the daughter of Noah, played by actor Russell Crowe.
Directed by Darren Aronofsky, the movie is slated to release in 2014.