If you walked down the aisle in your mid-20s, then we've got some good news for you: you married at the perfect age.

A mathematical theory - named the 37 Per Cent Rule - dictates that 26 is the ideal age at which to choose a long-term partner, reports The Independent.

The theory, developed by cognitive scientist Tom Griffiths and journalist Brian Christian, the authors of the book Algorithms to Live By: The Computer Science of Human Decisions, suggests that 26 is the time to settle down.

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The rule proposes that, once you are 37 per cent of the way through completing a task within a set timeframe, then you have reached the perfect point at which to decide, based on the information you have gathered thus far.

At this point in the selection process, you are likely to make the best decision: choose too early, it argues, and you may miss out on better options, but if you wait too long, good options may become more limited, as the dating pool narrows.

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So if the average person looks for their future partner between the ages of 18 and 40, then 26 is the age at which to decide, it claims, as you are then 37 per cent of the way through the 22-year process.

Does anyone else think this all sounds a bit too cold and calculated?