Secret to a happy marriage? Only having one sexual partner in your LIFETIME
The secret to a happy marriage is having just one sexual partner during your life, research has suggested.
It found that men and women who had only had sex with their spouse are 7 per cent more likely to be happy than those who played the field when single.
Even one or two sexual relationships before marriage leads to lower levels of wellbeing.
The study was carried out in Utah, a US state with a majority Mormon population.
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