Facebook data crunchers say Jedis are the most likely of all faiths to marry people outside of their religion. Spain has the highest rate of intermarriage of any country in the sample. In the US, 86% of relationships are between two people of the same religion. People date outside their religion more often than they marry outside it, particularly when theyre in their 20s. Mormons and Sikhs tend to keep not only marriages but also other relationships within their religion, at least in the US.”]