Blake Lively and Leonardo DiCaprio
10/04/2011 at 12:40 PM EDT
Their summer romance
and Leonardo DiCaprio
, linked since May at the Cannes Film Festival, are no longer dating, a source close to DiCaprio tells PEOPLE.
"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.