Forget the economic slowdown, unpopular legislation, opposition from Tory members over the issue of legalising gay marriage and other headaches of governance. Prime Minister David Cameron does know a thing or two about keeping the romance alive in his marriage.

Details shared by Cameron with Now magazine show that he and his wife Samantha celebrate weekly date nights. Despite having to manage their three young children, the first couple makes it a point to find time for each other.

"We have one night every week where we either stay in and do nothing or go out on our own. We have a couple of favourite Italian restaurants," the 45-year-old Prime Minister said.

The Conservative leader also revealed that memories of his wedding and the first night of his honeymoon remain intact even after nearly 16 years of marriage.

"Probably getting married and the first night of my honeymoon [1 June, 1996]," the PM said when asked to name the best day of his life.

"I can remember pretty much minute by minute."

In baring his personal life, Cameron is perhaps following former Labour prime minister Tony Blair who once said he "devoured" wife Cherie's love.

In the same interview Cameron spoke about his New Year resolution to "lose weight".