Panorama launched its investigation after complaints from customers who went on to sites as free users and attracted a lot of interest from potential dates.
They then paid for subscriptions to gain access to contact details, only to discover that interest in their profiles rapidly tailed off.
But it still means that one-third of online daters have not yet met up in real life with someone they initially found on an online dating site.
One-in-five online daters have asked someone else to help them with their profile.
Online dating use among 55- to 64-year-olds has also risen substantially since the last Pew Research Center survey on the topic.
Today, 12% of 55- to 64-year-olds report ever using an online dating site or mobile dating app versus only 6% in 2013.
Ryan Pitcher worked for Global Personals, Britain’s third largest dating company, which runs more than 10,000 dating sites worldwide.
He said he ran a team who created fake profiles or ‘pseudos’ to con customers into thinking they were talking to other genuine online daters.
One-third of people who have used online dating have never actually gone on a date with someone they met on these sites.
If you haven’t found quite what you’re looking for on an online dating site, you aren’t alone.
It acted after BBC Panorama investigators bought the data of 10,000 people from a company called Usdate, which has a sales office in Florida.
The profiles included photographs and lists of names, email addresses, dates of birth and sexual orientation.
Many online daters enlist their friends in an effort to put their best digital foot forward.