updated 10/04/2011 AT 12:40 PM ET
•originally published 10/04/2011 AT 12:45 PM ET
Their summer romance is over.
“It’s amicable. They’re friends,” the source says, adding that distance and DiCaprio’s work commitments contributed to the breakup.
First spotted together hugging on a yacht on the French Riviera, the pair also clocked time together at a Sydney, Australia, zoo, on bikes in New York City and on vacation in Italy over the summer.
Over the weekend, Lively, 24, was spotted in Boston with Ryan Reynolds, according to a report in the Boston Herald. The Gossip Girl star was reportedly spotted on the Acela train and, later, having dinner together at sushi restaurant, O Ya.
DiCaprio, 36, will next appear in J. Edgar, due out in November.