Jason Trawick and Britney Spears on the Rocks?

Jason Trawick and Britney Spears have hit a rough patch, according to reports.

According to Us Weekly, the singer and X Factor judge's "constant demands" that her fiance "check in with her" have him fuming and are a main cause of strife.

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He supposedly "puts her on speakerphone so friends can hear her nagging."

Also, "The romance is gone" for the couple, says the insider.

A rep for Spears denies this, while another insider insists that everything is fine, and Jason Trawick wouldn't pull something like that even if if wasn't.

"That's not Jason's style. They're happy," said the source.

Nevertheless, Us' celebrity gossip mole insists there's turbulence ahead for the two, who got engaged last December, saying, "I'd be shocked if they got married."

Jason proposed on Britney's 30th birthday almost a year ago, but the two have yet to set a date. What do you think? Is Trawick The One for Britney?