A spokesperson for Heather told Usmagazine.com: "Jack and Heather are no longer engaged.”
It is not clear why Jack and Heather - who began dating in 2007 – have ended their engagement.
Speculation their relationship was in trouble was rife last night (14.11.11) when the actress arrived alone at the 'Twilight Saga: Breaking Dawn Part I’ premiere and was not wearing her engagement ring.
Jack is best known for playing a sea captain on long-running Us TV show 'The Bold and the Beautiful', while Heather is currently working on 'The Assistants' alongside David Henrie.
The blonde beauty has had a turbulent few years - last year she was arrested,