Angelina Jolie and Brad Pitt star in the latest editions of the US gossip weeklies, with Jennifer Aniston making a cameo appearance in reports of their 'troubled' relationship.

Following a week in which – depending on the 'source' – Brad and Angie are either spitting up or getting married, the couple dominate this week's tabloid covers.

Star magazine brings us 'Brad & Jen's Secret Hotel Hook-Up' as described by a limo driver, whilst the less salacious People promises to uncover the "truth" behind the tabloid rumours.

In Touch, meanwhile, has gone for the birthday-bust-up-over-Jennifer angle.

The magazine claims that Angelina's 34th birthday celebrations last week descended into an explosive row when the subject of Brad's ex-wife came up.

"Things were going fine, and then Angie started accusing Brad of meeting Jen in LA," says their source.

"It turned into a massive blowup, which left Brad more disillusioned than ever."

"He told her straight out that he’s had enough and was out of there."

But the couple are apparently determined to keep up the united front for the sake of their children - as reportedly evidenced by Brad's visit to the Washington DC set of Angelina's new movie Salt on Monday.

“Angelina has cried a lot of tears over Brad,” say another insider. "This split has been simmering for months, and unless something drastic happens, it is going to boil over very soon.

"The only thing keeping Brad from officially walking out is their six kids.”

As for what is really going on behind-the-scenes with Team Jolie-Pitt - that remains a Bermuda Triangle-style mystery for now.