Either That, or Pray a Lot

Facebook Data Science reports that the overwhelming majority of Facebook members marry within their faith:

(Facebook diagram)

With so many potential sources of conflict, e.g., money, sex, children, and careers, most marrieds seem to display a practical streak by uniting with someone of the same religion, thus reducing, if not eliminating, it as a bone of contention. Divorce is significantly more likely if partners have different religious backgrounds.

According to calculations based on the American Religious Identification Survey of 2001, people who had been in mixed-religion marriages were three times more likely to be divorced or separated than those who were in same-religion marriages.

Living together before marriage is officially frowned upon by major religions, but a trial run is probably good advice to those marrying outside the faith.  Either that, or pray a lot.