Bosworth and Bloom over again

On-again-off-again couple Kate Bosworth and Orlando Bloom are off again, reports Entertainment Tonight.

The couple, who have dated over the last four years, decided to go their separate ways as Bloom, 29, is filming Pirates of the Caribbean in Southern California.

Bosworth, 23, and Bloom are scheduled to film a movie, Seasons of Dust, together this fall. The drama is about a young woman whose uncle commits suicide, forcing her to run away with a dashing thief.