Brad Pitt stepped out in Berlin sans Angelina Jolie last night, amid persistant rumours that all is not well in Brangelinaland.

Dapper Brad's relaxed outfit couldn't hide the actor's frown or disguise the fact his beautiful wife was no-where to be seen.

The couple and their brood recently outwitted paparazzi in an impressively covert move from their French chateau to a new luxury pad in the german city.

But, despite the show of family togetherness, the split rumours continue to fly.

According to new reports, tensions have been building between the couple for months now and Brad's continued solo act is only adding fuel to the fire.

"Things have gotten heated between Angie and Brad. Angie is volatile right now,"a source tells Star.

"She misses her mother (who died last year) more than ever, she's barely eating and she feels stuck at home amid total chaos with six kids.

“And to make matter worse, she's nagging Brad to the point that he uses any excuse to take off.”

See Brad out & about in Berlin yesterday below