If you've used a dating site or app like Ok Cupid or Tinder, you'll have noticed the hundreds of fake profiles that exist on the sites, seemingly designed to make you hand over your profile to scammers.

The issue of the fake online dating profile continues to escalate like a hurricane, and drown all the real singles out there in online dating land. The issue remains that the anonymity of online dating has opened the flood gates of liars, thieves, cheats, and the sex industry looking to make a quick buck any way they can.

So, how can singles wade through the muck and find true love?

It's pretty easy to tell: They send the same message over and over, often with the same link.

But there's a type of dating site scam that's far trickier to spot, and the people who operate it claim to be making thousands of dollars every month fooling vulnerable men.

Around 7.8 million UK adults used online dating sites in 2016, up from just 100,000 in 2000.

But just as dating app users are at an all-time high, so is the number of people becoming victims of online dating fraud.

The guide isn't available for free, in fact, it was being sold for Bitcoins on a deep web marketplace.

Bitcoin is cryptographic currency favoured by criminals as it allows semi-anonymous online transactions.

Maybe they got really busy, left town on vacation, or decided that online dating is just not their thing.