Dating Site eHarmony Uses Machine Learning to Help You Find Love

That hard-to-imagine prospect was eHarmony's reality when it first launched 16 years ago. Users created a dating profile, filled out a 450-item questionnaire, and reviewed matches without the ability to see any other users' pictures. Over the years, the site has added photos and made its clunky interface easier to navigate. That, however, hasn't stopped free mobile apps like Tinder and Bumble from stealing users away from the dating site stalwart. "People do end up on those sites looking for relationships, and we see that as our challenge," says eHarmony CEO Grant Langston.