Researchers find gene may influence monogamy in men. (Comstock)

What if you could tell if your man is the marrying kind?

It's in his genes, according to Swedish researcher who have linked the hormone vasopressin -- related to the "cuddle chemical" oxytocin -- may help determine whether a man has the makings of a devoted husband.

Researchers at the Karolinska Institute in Stockholm studied 552 pairs of male twins currently involved in heterosexual relationships for five years or longer.

Just like in the vole rodents they had studied before, Hasse Walum and his team found that men with a certain variant of the vasopressin 1a gene, known as allele 334, scored especially low in a partner bonding test.

They were less likely to marry then the men carrying another form of the gene, and the women involved in relationships with them were less satisfied than women who were married to men who didn't carry allele.

The study also found that men with two copies of 334 were more than twice as likely to have gone through a marital crisis of sorts of sorts over the past year. But of course, there are more ingredients than this to a happy marriage, and the gene goes beyond coupling.

Earlier this year, studies were done that showed the link between RS3 334 and it's effect on amygdales, associated to how we trust, and another study showed that people who suffer from autism, a condition characterized by unusual social behaviour, often have multiple copies of RS3 334.