Most dating sites boast about finding ''perfect matches'' and the number of single members that go on to marry.
But ForgetDinner.co.uk says only a ''tiny fraction'' of its users strike a lasting relationship, and that not one has tied the knot.
The majority, including those in long-term relationships, are encouraged to skip small talk - and head straight to bed.
According to spokesman Howard James, this 'philosophy' of one-night stands has led to 10 divorces or separations since the site was launched in 2008.
He said: ''We are delighted to have helped so many people leave behind their unhappy relationships and discover new and fulfilling lives.''
The site, a so-called 'Wedding Free Zone', introduces folk looking for ''uncomplicated flings''.
Of its 200,000 adult members, a ''significant number'' - believed to be in the region of 15 per cent - are married or in relationships.
A recent survey carried out by the site revealed that dozens of ‘love rat’ members have been caught cheating on their partners. Of these, 10 have now formally separated.
''It's a strange milestone to celebrate, I know,'' Howard said. ''But it proves one thing - that the days of old-fashioned romance have long gone.''