Amy WinehouseAmy Winehouse is reportedly causing problems for the organisers of her current European tour because she is so utterly devoted to husband Blake Fielder-Civil.

A source close the star has revealed that Amy, who was spotted on the verge of tears while wandering around Munich on her own last week, is struggling to cope with Blake’s demands but can’t say no to her husband of six months.

The source told Closer magazine: “They are constantly arguing backstage, and whenever he gets bored he demands they leave, no matter what she’s doing.”

“At one of her gigs, Blake even insisted they go back to the hotel half an hour before she was due on stage.”

“Amy’s team has told her they can’t run a tour under these circumstances. But she runs straight to Blake, who goes mental and threatens to fly back to the UK.”

“Then she goes back to her team and tells them, she can’t do it without him around.”

Amy’s forthcoming US tour dates are currently in jeopardy too: her dad Mitch Winehouse revealed yesterday that she had lost her US work visa after her arrest for cannabis possession in Norway earlier in the month.