The new Us Weekly (on newsstands now) has the exclusive first look at what's really inside a shocking new tell-all about Brad Pitt and Angelina Jolie -- and reveals the truth behind some of the alleged bombshells.

Brangelina: The Untold Story of Brad Pitt and Angelina Jolie reports that "they've broken up so many times it would make your head spin."

It also claims Jolie "has a temper like a cobra." The book even alleges that she confessed to hiring a hit man to kill her in 1998 because she was so distraught.

Us Weekly reports that the actress, 34, still has her battles with Pitt, 45 - especially when it comes to their six children.

"They fight all the time about the kids - where to put toys, saying the wrong thing to a nanny, not cleaning up," one source tells Us Weekly. "Like cats and dogs."

For more on Jolie and Pitt - including the truth behind Pitt's "secret meetings" with Jennifer Aniston, why the tell-all claims Pitt and Jolie will split by "Christmas 2010" and inside Jolie's decision to reconcile with her father after an eight-year rift - pick up the new issue of Us Weekly today!