"They're just shooting on two different continents and it's a matter of distance. There is no bad blood at all, and they have a lot of respect for each other," said an insider, reports femalefirst.co.uk.
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The 31-yera-old actress, is currently filming her new next "The Princess Switch 2".
While Butler appears to be busy with the production of Baz Luhrmann's upcoming Elvis Presley biopic, in which he stars as the title role.
Though the pair are "split for now", a second source said they plan to "see what happens" and could reunite once their schedules settle down again.
"They have such a history and deep connection they could find their way back to one another.