The latest victim was among 159 people similarly conned in the first four months of this year; 119 victims lost nearly HK$76 million between them in the first quarter of 2018.

It’s a crime to which many of us could fall victim, because these fraudsters prey on women and men who show any sign of emotional vulnerability.

According to Dr Paul Wong Wai-ching, associate professor in the department of social work and social administration at the University of Hong Kong, romance scam criminals isolate their victims from family and friends so that they will focus time and resources on the fictitious relationships.

This type of online criminal activity has become so prevalent that it’s categorised under “advance fee fraud”, in which the fraudsters usually con their victims into making upfront payments for goods or services that don’t materialise.

It’s depressing to realise that, despite the high level of connectivity in modern society, an increasing number of people still feel isolated and yearn for companionship.

Hong Kong woman tricked out of HK$20,000 in online love scam

Researchers believe such criminal activities, also known as mass-marketing frauds, are typically conducted by international criminal organisations, which operate through online dating sites and social media.

Most of the victims are female, middle-aged and well educated. Besides being typically more impulsive and more trustworthy, one intriguing finding shows that these victims tend to be “less kind”.

Wong says this might be more suitably interpreted as “less socially approachable”.

“Perhaps the kindness is related to the fact that these individuals have fewer friends and limited networks to warn them against potential harm or help them check out profiles of new acquaintances. Or maybe these individuals simply like to seek out more harmful relationships,” Wong says.

Someone with few friends they can count on and confide in is a perfect target, says Carol DeCandido, managing partner of Mozaic, a Hong Kong dating agency catering to the over 40s.

Her social networking club sees a women-to-men membership ratio of 75-25 per cent.

“Women are more daring and willing to venture out into the dating wilderness and explore different opportunities to find partners, more so than men,” she says.

Online dating doesn’t have to be scary, just be cautious, says Jacqueline Chia, Mozaic’s co-founder.

“It’s always nice to be complimented, especially by someone you like. But beware of those who are overly sweet and exceedingly accommodating because maybe they are trying to be someone they are not and acting to be the ideal person you are looking for,” she says.

Scammers will usually follow a winning formula. First, they create a fake online profile and often pretend to be professionals working in engineering, finance or the military; the latter allows them to justify being overseas, away from their potential victim’s country of residence. Some serve up sob stories that their wives have died tragically, leaving them to raise a child alone.

“If you can’t meet the person face-to-face, make sure you video chat with them online,” says Chia. “Fraudsters would always avoid having real contact to expose their faces. Even when you’ve managed to pin them down for a Skype chat, they would use the excuse of weak internet connection and then put a fake photo up to just chat online without any visual. If that happens, it should definitely raise some red flag.”

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Recovering from a bad relationship or break-up is already difficult but being scammed online can be devastating and isolating.

“It is difficult for victims to rebuild their social networks after the scam,” says Wong. “This might explain why victims of romance scams are less likely to go out of their way to cheer people up and be nice to others or get excited by other people’s good fortune. They seem to want to give up even a reasonable level of human interaction as a result.”

Although you want to remain open-minded, a lonely heart should be sensible and shrewd. Even if someone is not after your money, you still need to protect yourself from potential harm, physical and emotional.

Luisa Tam is a senior editor at the Post and a former sex talk-show host at DBC Radio