Is Jennifer Aniston behind new beau Justin Theroux, girlfriend split?

Looks like this time it is Jennifer Aniston who is a home wrecker.
According to an exclusive report, Aniston`s romance with actor Justin Theroux has ended his 14-year relationship with his live-in girlfriend Heidi Bivens - who moved out of their home last weekend.
According to sources Hollywood costume designer Bivens "is devastated" after Theroux abruptly ended their relationship as he got close to Aniston.
Aniston, 42, and Theroux, 39, met last fall on the set of ‘Wanderlust,’ due in October, but in recent weeks they have become inseparable.

"Heidi is heartbroken. She was completely blindsided. She and Justin had been together for years, they had a home. Then he met Jennifer and everything changed. At first he claimed he and Jen were friends,” a newspaper quoted a source as saying.

A rep for Bivens confirmed that: "Heidi and Justin have been together for 14 years. They met when she was 20 years old and he 24, and yes, she just moved out of their home last weekend. She has no comment."