Because according to a recent study , there IS a correlation between relationship age gaps and the longevity of said relationship. The study by Andrew Frances and Hugo Mialon from Emory University, Atlanta surveyed 3000 married participants.
Their findings showed the larger the age gap, the greater the chance the relationship will end, and this likelihood goes up incrementally.So a gap of five years agegap means a couple are 18 per cent more likely to break up than age equals. This goes up to 39 per cent with a 10 year age gap, and 95 per cent with a 20 year gap.
According to the research, the most successful agegap is apparently no more than a year, for which there’s only a three per cent chance of going your separate ways.