This is not new. Research has suggested that up to 80% of women of faking an orgasm during sex is much more common among women than men, as it is certainly easier to pass off the pretence as a real orgasm.
The reasons for faking it differ from person to person. Some of the reasons may be simple, while other reasons will be complex. Whatever the cause, faking it can lead to tensions in relationships, and may be the silent reality in many bedrooms across the world.