The emotional closeness of a relationship leads to better orgasms for lovebirds, bonking boffins have confirmed.

Piercing any passionate notions we may have about the fabled one-night stand, the German scientists concluded during their research that men especially come harder - and better - when they are dating a long-term partner.

"While we already knew from other studies that sexual activity declines with the length of the relationship, despite the decrease in frequency of activity we saw satisfaction increase," sex therapist and research analyst Dr Ulrike Brandenburg told The Local.

Deeming the conclusion "astonishing", he added: "The emotional intimacy seems to increase the intensity of the orgasm."

In the results of condom king Durex's Sexual Wellbeing survey released last week, it was revealed that two-thirds of German women are satisfied with the intensity of their climax, compared to 54 per cent of women worldwide.

Of the proportion who admitted indulging in one-night wonders, just 22 per cent said they come on the occasion, compared to 40 per cent of loved-up ladies in a relationship.

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