(CNN)--The Beatles sang "Money can't buy me love."
Now, a new study says money can erode love.
Researchers from Brigham Young University say that materialistic couples with more money have more problems.
Couples who don't believe money is that important scored higher on marriage stability tests.
And the study says when both members of a couple are materialistic, the relationship is in more trouble than when just one is.
The full report appears in the latest Journal of Couple and Relationship Therapy.
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