Pressure to enjoy sex was one of the main reasons Others became bored after an orgasm seemed unlikely
Seven out of ten women and nearly a third of men have faked an orgasm, according to new research.
The study, carried out by the University of Kansas, found that 68 per cent of women and even 28 per cent of men have pretended to climax with a partner.
Both sexes gave the same reasons for faking it - a partner's orgasm was imminent so they felt under pressure to climax.
Other commonly cited reasons were that they wanted to end - without hurting a partner's feelings - or they were bored after an orgasm seemed unlikely.
The study, published in the Journal of Sex Research, questioned 281 male and female students about their sexual habits.
It found that in many cases, both men and women simulated orgasms because they felt under too much pressure to enjoy real sex.
This was a particular problem for men.