Richmond, VA (WFN) -- Some bedroom problems could be brewing for newlyweds Britney Spears and Kevin Federline.

According to feng shui expert Robyn Bentley, every person has four good and four bad directions they should point their heads while sleeping -- and the Federlines are complete opposites.

The system utilizes gender and birthdate and Bentley says if the Federlines sleep together, one of them will be pointed in an unlucky direction that will make them feel yucky, while the other will be feeling groovy snoozing in a lucky direction.

Bentley advises couples who share a bed to always sleep with their heads pointed in a good direction for the primary breadwinner since money is the root of many relationship problems.

So, in the case of Kevin and Britney, she recommends sleeping with the head of the bed facing northwest -- which is a good position for Britney and a "least worst" position for Kevin.

Although Kevin will be lying in an unlucky direction, Bentley says sleeping together like that will keep the two lovebirds happier than if they sleep apart.

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