Leonardo DiCaprio and Bar Refaeli Call It Quits?

Rumor has it that "Titanic" star Leonardo DiCaprio's romance with on-off girlfriend Bar Refaeli is said to be finally over. The 33-year-old actor is rumored to have broken up from the model girlfriend.

According to In Touch Weekly magazine, Refaeli was spotted partying in Las Vegas on Saturday, September 13. The Israeli model was said to be clearly on the prowl. "She kept saying she needed to meet a hot guy," a source told the publication. "She was on the prowl."

The night before, on Friday, September 12, the "Blood Diamond" star was seen at Butter restaurant owner Richie Akiva's birthday party at New York City's 1Oak without Refaeli. "He kept calling it a great boys' night," an onlooker revealed. "He was taking shots of Grey Goose and talking to everyone."

Leo and the 23-year-old beauty began dating in early 2006. The couple have not been spotted together since July 14 in Los Angeles. "Leo's been a fixture on the nightlife scene recently," said an insider. "Bar was having a blast during her night out in Las Vegas."

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