Image: japantimes.co.jp

As couples around the world prepare to celebrate their love on Valentine’s Day, Japan is grappling with more evidence that its citizens have lost the spark in the bedroom.

A new survey by the Japan family planning association found that nearly half of married couples had not had sex for more than a month and did not expect that to change in the near future.

The data on married couples were among the findings of a wider survey of 3,000 people aged between 16 and 49 conducted at the end of last year. The association received responses from more than 1,200 people, including 655 married men and women.

A record high 47.2 per cent of married men and women said they were in sexless marriages, up 2.6 percentage points from the previous poll in 2014, the association said, and significantly higher than the 31.9 per cent recorded when it conducted its first survey of the nation’s bedroom habits in 2004.

“The tendency of being in a sexless marriage has increased further,” Japanese media quoted the association’s president, Kunio Kitamura, as saying.