Is this what you meant by 1950's English sexual morality?
No this is not what i meant: a slow seduction or 'wooing' as we say in English, is always better than jumping straight to sex. By 1950's morality, i am refering to the idea that good girls become bad girls (and therefore worthless) by going to bed with a man too easilly and/or quickly. Whereas a man is not judged one way or the other for this.
In the case of what happened here, there was no time for wooing. And sometimes things simply happen and only afterwards you think to yourself - how on earth did that happen. Like fire.