This is one stunt that could either make or break your Valentine's Day.

If you've seen the latest series of Black Mirror, you'll be aware that one of its most popular episodes was 'Hang the DJ' - which saw people matched up in a dating system before having the lifespan of their relationship revealed to them.

If they both chose not to reveal it and one of them snuck a peek... well, let's just say that there were consequences.

Now, however, you and your other half can do the same thing thanks to a new website that will reveal the expiry date on your relationship - providing you both agree.

You can enter the system via this link... if you dare...