Jennifer Aniston ordered Brad Pitt out of their house after he admitted he was in love with Angelina Jolie, it has been claimed.

The actress had been suspicious about the relationship between her then-husband - who she married in 2000 - and his 'Mr. and Mrs. Smith' co-star for a long time before their 2005 separation, but he initially denied they were romantically involved.

The film's producer Arnon Milchan says in new book 'Confidential: The Life Of Secret Agent Turned Hollywood Tycoon Arnon Milchan': "At first, Jen didn't believe he was involved with Angelina. She started asking around but no one would tell her anything because they were loyal to Brad, so she asked him point blank. He denied it."

The pair went on a pre-planned holiday to the Caribbean with friends Courteney Cox and her husband David Arquette to celebrate New Year 2005, but the strain proved too much and Brad confessed he was in love with Angelina, according to Arnon.

He added: "He eventually admitted he was in love with Angelina. Jen was furious and threw him out."

According to Arnon, Brad only returned to his martial home to collect his belongings before moving into the producer's house, where he would make a low-key entrance to the film set every day.

The book claims: "Brad drove each day to the set, and everywhere else, on a motorcycle and he wore a wraparound helmet with a tinted visor so no one would recognise him. He stayed with me for the duration of filming."

Brad split from Jennifer in January 2005 and started a relationship with Angelina just a few months later.

The couple are still together now and raise six children, Maddox, nine, Pax, seven, Zahara, six, Shiloh, five, and three-year-old twins Knox and Vivienne, together.