A little ranking that amuses, intrigues, and might spark some lively debates around the dinner table this weekend.
Lille, the second most “unfaithful” city in France
According to a study by the extramarital dating platform Gleeden, Lille ranks in second place among the most unfaithful cities in France in 2026. With 12.94% of its adult population registered on the platform, the capital of Flanders sits just behind Bordeaux (13.26%) and ahead of Paris (10.44%). In other words: on paper, Lille even outpaces the capital in this regard. We'll let you handle that info as a couple.
Paris dethroned, Bordeaux leading
Once viewed as the unofficial queen of complicated romances, Paris loses its throne here and slips to third place. The complete ranking of the top 10 most “unfaithful” cities in France reveals this…i :
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A study to take with a grain of salt
Before you start suspecting everyone in your building, here’s a useful reminder: this study is based solely on registrations to a single platform specializing in extramarital relationships. So, it doesn’t automatically mean that people are acting on it. Signing up could be out of curiosity, a moment of doubt, a desire to chat… or even just a little digital ego boost. In short, not everyone is plotting a double life! The study mainly reflects a trend, not an absolute truth.
A glimpse into changing love habits?
This kind of ranking also says something about the evolution of relationships today. Dating platforms, whether traditional or more discreet, are becoming more common, habits are changing, and so are romantic behaviors. So, no, Lille isn’t officially the capital of infidelity, but this second place still tells us something about our times. And between us, it’s quite fascinating!
gives you an excellent topic for conversation during happy hour.