SEX.

Now that we have your attention - would you believe that millennials are less likely to commit that cardinal sin of adultery than their elders?

Shocked? Well according to a new study, the younger generations are less likely to have sex outside of the marriage than those aged 55 and over.

Even those aged 55 and under admitted to more affairs than the millennials!

New research from the Institute for Family Studies claims 20 per cent of those in the 55 and over bracket admitted to sex outside of the marriage, while that number dropped to 14 per cent for the 55 and under bracket.

Generation X-ers, those born between 1964 and 1981, put their collective hands up for 17 per cent.

Millennials? Only 12 per cent born between 1981 and 1997 admitted to extra-martial affairs.

So what's happening? Isn't the younger generation supposed to be the promiscuous ones?

According to the New York Post, that stereotype can be thrown out the window with the baby boomers the true believers of free love.

For instance: baby boomers were brought up in the 'summer of love' where they were literally encouraged to "make love not war".

Add to that case studies, for instance a 2015 study by Jean Twenge, that show baby boomers averaged an estimated 11 sexual partners in their lifetimes compared to just eight for millennials.

And while technology (Tinder, online dating etc) has also been highlighted as a factor, there is a growing trend for millennials to marry later in life, or, in some cases, never at all.