The couple began dating in 2009, but Us Weekly claims the TV hunk and Bosworth have now parted ways.
A source tells the publication, "It was very mutual. And it happened a while ago... He's single - and he is loving the attention!"
The stars never publicly confirmed their relationship status but the pair did not hide their affection for one another - they took a number of romantic vacations together, including a trip to the actor's native Sweden last year (10) to meet his friends.