The stunning Israeli model is said to have brought an end to their six-month relationship because she was unable to cope with the Titanic star's hectic work schedule and constant partying.
A friend of the model tells British newspaper News of the World, "Bar is a professional model so she has to be healthy and look great every day, so there is no way that she could keep up with that kind of decadent lifestyle.
"When they were apart she worried about what he was up to and in the end decided it would be easier and less painful just to say enough is enough."
A member of his entourage adds, "Leo was gutted when Bar told him it was over. But he is at the top of his game at the moment and there's no danger of his changing his ways any time soon."
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