Lisa is staying with friends in LA while she gets over the split and George is at his home in Lake Como, Italy reports the Mirror.
A source said: "It's always difficult to maintain a long distance relationship. They have remained great friends and there is no animosity between them."
The pair met in 2000 and dated on
and off for a year before splitting. They then got back together last
May when George invited Lisa to dinner in Amsterdam where he was
filming Ocean's 12.