Nagging can become a prime contributor to divorce when couples start fighting about the nagging rather than talking about the issue at the root of the nagging, says Howard Markman, professor of psychology at the University of Denver and co-director of the Center for Marital and Family Studies.

WSJ: Nagging in Marriage Is More Common Than Adultery But Can Also Lead to Divorce

Markman, a psychologist at the University of Denver and co-author of 12 Hours to a Great Marriage, speculates that since getting married is so much fun, male celebrities simply like to do it more than once.

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