Around 7.8 million UK adults used online dating sites in 2016, up from just 100,000 in 2000.
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.
Watch out for inconsistencies and repetition too - if you’re talking to a team of scammers, they’re bound to forget what’s previously been said and slip-up occasionally.
After reporting the profile to the dating site, stop all contact and get in touch with Action Fraud on 03.
It was only when her money transfer was blocked due to a security alert around the man’s name that she realised something was wrong.