Washington, Nov 2 British actress Sienna Miller has reportedly called it quits with her boyfriend British DJ Slinky Wizard, as she is not able to maintain a long distance relationship.

According to Britain's Sunday Mirror, Miller, 27, who has been dating the DJ, real name George Barker, since July this year, had to move to New York for her turn in Broadway production 'After Miss Julie'.

And the distance is said to be too much for both to handle so they have decided to part ways.

"We had all hoped Sienna and George would be a long-term relationship. They always looked so happy together," Contactmusic quoted a source as telling the publication.

"But they realised it wasn't going to last the distance with Sienna being out in New York with the play for the foreseeable future, so they agreed to part ways.

"Long-distance love isn't something they were prepared to do and it was a mutual thing that they decided to part. They'll remain pals and who knows what the future will bring?" the source added. (ANI)