They say there's no simple formula for a long-lasting marriage. But it turns out they were wrong.
Scientists claim to have come up with a mathematical model which determines whether newlyweds are heading for a lifetime of happiness -- or spiralling towards divorce.
They say the technique is 94 per cent accurate and can spot the difference long before any cracks have appeared in a relationship. It works by dividing couples into five types -- with only two guaranteeing a stable marriage.