Around 7.8 million UK adults used online dating sites in 2016, up from just 100,000 in 2000.
But just as dating app users are at an all-time high, so is the number of people becoming victims of online dating fraud.
One of the most common techniques is to build up trust with the person by messaging for weeks or even months before suddenly having an emergency - the fake person being mugged but their daughter needing urgent surgery, for example - and asking for money.
But then they suddenly need money for rent too, then food, then medical fees, and it can quickly escalate.
Nancy is now facing bankruptcy, and although her case is extreme, the average victim of online dating fraud loses £10,000 according to Action Fraud.And it’s not just particularly vulnerable people who fall victim either.“[It’s] not the case that stupid people fall for romance scams - they can be very clever,” Professor Monica Whitty, a cyber-psychologist, explains. Scamalytics, a company which runs anti-scammer software for a number of the major dating sites, are trying to reduce online dating fraud by creating profiles of the average male and female con artist.She is 5’6”, has never been married, and has long brown hair and blue eyes.Photos used are often selfies of her wearing skimpy vest tops showing lots of cleavage.