Experts recruited 1,500 married men and women to take part in the survey, which also revealed recently married man who have an ‘extremely pleasurable’ sex life have a three per cent chance of decreasing that view to ‘very’ or ‘less’ pleasurable in the next year.

Recent research also revealed high school sweethearts are the couples who have the highest chance of cheating.

In new data from Ashley Madison, it was revealed that these long-term lovers are the most likely to stray from each other because they might eventually become bored of the person they have been with since they were young.