A lack of trust in their romantic partners is pushing a lot of people to use online ‘loyalty testing’ services that flirt with partners and try to get them to cheat.

At the beginning of this year, online ‘loyalty testers’ began trending on Vietnamese social media, and today a simple search yields thousands of results for both paid testers and ones who offer their services free of charge. There are hundreds of them on Facebook alone, a platform that remains very popular in Vietnam, and more than half of them provide the service for free. However, psychologists warn that this type of partner loyalty testing may have unforeseen negative consequences on a relationship.