Netflix could be killing sex — with new research suggesting couples get into bed and watch shows on their iPads instead of getting romantic.

Once a code for casual sex, people may now be taking “Netflix and Chill” rather more literally — perhaps to the detriment of our love lives.

A study by researchers at Lancaster University in the UK reveals that the busiest hour for internet use is now between 10 p.m. and 11 p.m., driven by those watching streaming services such as Netflix, iPlayer and YouTube.

Evidence from nearly 400 devices shows a peak at this time — with viewers prolonging the “traditional” hours of TV watching.

As reported by MailOnline, the authors state: “To the extent that this traffic is associated with viewing films or programs, it suggests that mobile devices are used to prolong hours of ‘TV watching,’ perhaps after the main TV set has been turned off.”

The study, which is published in the journal Energy Research and Social Science, required some participants to keep diaries, which showed the new peak internet hour was driven by TV watching.

The research could support a warning from Prof. David Spiegelhalter from the University of Cambridge, who says couples are less interested in sex because they watch more TV in bed.

In 2016, he blamed figures showing falling rates of sex on the “mass of connectivity” we have now “compared with just a few years ago when the TV used to close down at half past 10.”