Dating with the sexual revolution
These are the pressures which, according to Martin Amis, contributed to his sister's ruin.
It may be cruel to say it, but today's young girls primping and un-dressing for Saturday night, when they will get drunk and get laid (and feel doubly bad in the morning) are the inheritors of her destiny.
But the problem with the willing girls was that a lot of the time they were willing not because they particularly fancied the people concerned but because they felt they ought to.
There was a lot of misery.' An acceptance of casual sex was central to the spirit of the age, and it was not easy for a young woman to escape that influence, whether it made her uncomfortable or not.
Who is to say he isn't right and that in a less 'liberal' society his sister might have behaved differently, or might have been safer?
Alex Comfort's The Joy of Sex: A Gourmet Guide To Lovemaking, came out in 1972, and that same year the first issue of British Cosmopolitan changed women's magazines for ever.
One cultural historian of the Seventies, Howard Sounes, writes: 'The after-effects of the great social and cultural changes of the Sixties, like waves created by rocks tossed in water, rippled out through society.' Today, those of us who express doubts about the long-term effects of such cultural changes are dismissed as prudes suffering from a permanent moral panic-attack.
The denial of the liberals is ongoing: a blinkered refusal to admit the causes and effects of history.
You only have to think of the excesses of the first sexual revolution - the 'roaring' Twenties.
But our sexual revolution was more sweeping and long-lasting.