Just as Kevin Federline objected to Britney picking a male nanny (remember the infamous ‘Manny' Perry Taylor?) - apparently disliking the threat to his alpha-male status - so it seems that Brad Pitt is feeling similarly threatened by the new, and very macho, man in Angelina's life.

And sources close to the couple are whispering that Angelina's new bodyguard - known only as ‘Bill' - has unleashed a touch of the green-eyed monsters in Brad, because of Ange's behaviour around the British former SAS hottie.

Angelina: "My New Man"
Hired back in May, Bill has been a constant presence in Ange's life, accompanying the actress on her international travels. Known only by his first name - a security measure because of his previous job in the British special forces - Bill is said by pals to be in his mid-30s, closer to 32-year-old Angelina's age, another rumoured bone of contention for 43-year-old Brad.

"Angie seems to like to play it up and she has started calling the bodyguard her "new man," revealed an insider.

"Flirting" with Bill

"Angie can be very touchy and flirty at times," said a friend. "She's sort of like that with everyone. But when she does it with this new guy, it's hard for Brad to watch."

A natural flirt, and one Vogue writer once described her as being in her element when she was "surrounded by men", the actress has raised her lover of two years' ire with her behaviour around her bodyguard, even giving Bill the nickname ‘Chisel', apparently in reference to his chiselled features.

Brad's jealous!

The actor, although one of the world's sexiest men, is said to have reacted jealously to this new man in Ange's life, but pals of the Oscar winning actress, say that although Bill is attractive and his looks are "very much her type", she's merely trying to keep Brad on his toes with her flirtations.

"Like many women, Angie knows that stirring up a bit of the green-eyed monster is a great way to keep a man on his toes," spilled a friend.