New data from Feeld, a dating app for curious and open-minded individuals, shows that Heteroflexible was the fastest-growing sexuality of 2025. The app reports that heteroflexible identification grew by 193 per cent over the past year. Millennials made up nearly two-thirds of heteroflexible members, accounting for 65 per cent of the total. Gen X followed at 18 per cent, with another 15.5 per cent attributed to Gen X growth. Feeld also found that switching between identifying as straight and heteroflexible is one of the most common sexuality shifts on the app.
Heteroflexible typically describes someone who is primarily attracted to a different gender but is also open to same-gender attraction or experiences. It’s often understood as a form of sexual fluidity and sometimes discussed as a subcategory of bisexuality. Dr Luke Brunning, lecturer in Applied Ethics at the University of Leeds, said: “For some, heteroflexible will describe accurately how they experience attraction or typically behave. For others, it might be more of a promise-to-self, something they want to look into further, explore, or which they hope they will be in a position to experience in the future.” He also cautioned that heteroflexibility can be viewed negatively.
